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Finding the Fourth Proportional to 3,891.41, 5,837.10 and 1,117.67

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Solution

The fourth proportional to 3,891.41, 5,837.10 and 1,117.67 is: 1,676.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.41 : 5,837.10 = 1,117.67 : x
  2. Step 2: Convert to fraction form
    3,891.41/5,837.10 = 1,117.67/x
  3. Step 3: Cross multiply
    3,891.41x = 5,837.10 × 1,117.67
  4. Step 4: Simplify right side
    3,891.41x = 6,523,922.37
  5. Step 5: Solve for x
    x = 6,523,922.37/3,891.41
  6. Step 6: Final answer
    x = 1,676.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,892.41, 5,838.60 and 1,118.67
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.