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Finding the Fourth Proportional to 3,891.66, 5,837.40 and 969.96

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Solution

The fourth proportional to 3,891.66, 5,837.40 and 969.96 is: 1,454.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.66 : 5,837.40 = 969.96 : x
  2. Step 2: Convert to fraction form
    3,891.66/5,837.40 = 969.96/x
  3. Step 3: Cross multiply
    3,891.66x = 5,837.40 × 969.96
  4. Step 4: Simplify right side
    3,891.66x = 5,662,044.50
  5. Step 5: Solve for x
    x = 5,662,044.50/3,891.66
  6. Step 6: Final answer
    x = 1,454.92

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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.