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Finding the Fourth Proportional to 3,403.83, 5,105.13 and 938.13

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Solution

The fourth proportional to 3,403.83, 5,105.13 and 938.13 is: 1,407.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.83 : 5,105.13 = 938.13 : x
  2. Step 2: Convert to fraction form
    3,403.83/5,105.13 = 938.13/x
  3. Step 3: Cross multiply
    3,403.83x = 5,105.13 × 938.13
  4. Step 4: Simplify right side
    3,403.83x = 4,789,275.61
  5. Step 5: Solve for x
    x = 4,789,275.61/3,403.83
  6. Step 6: Final answer
    x = 1,407.03

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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.