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Finding the Fourth Proportional to 3,535.39, 5,302.68 and 938.53

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Solution

The fourth proportional to 3,535.39, 5,302.68 and 938.53 is: 1,407.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,535.39 : 5,302.68 = 938.53 : x
  2. Step 2: Convert to fraction form
    3,535.39/5,302.68 = 938.53/x
  3. Step 3: Cross multiply
    3,535.39x = 5,302.68 × 938.53
  4. Step 4: Simplify right side
    3,535.39x = 4,976,724.26
  5. Step 5: Solve for x
    x = 4,976,724.26/3,535.39
  6. Step 6: Final answer
    x = 1,407.69

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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.