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Finding the Fourth Proportional to 3,484.89, 5,226.89 and 887.67

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Solution

The fourth proportional to 3,484.89, 5,226.89 and 887.67 is: 1,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,484.89 : 5,226.89 = 887.67 : x
  2. Step 2: Convert to fraction form
    3,484.89/5,226.89 = 887.67/x
  3. Step 3: Cross multiply
    3,484.89x = 5,226.89 × 887.67
  4. Step 4: Simplify right side
    3,484.89x = 4,639,749.01
  5. Step 5: Solve for x
    x = 4,639,749.01/3,484.89
  6. Step 6: Final answer
    x = 1,331.39

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Double scale
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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.