Home / 1,601.27-2,209.98-938.39

Finding the Fourth Proportional to 1,601.27, 2,209.98 and 938.39

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Solution

The fourth proportional to 1,601.27, 2,209.98 and 938.39 is: 1,295.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.27 : 2,209.98 = 938.39 : x
  2. Step 2: Convert to fraction form
    1,601.27/2,209.98 = 938.39/x
  3. Step 3: Cross multiply
    1,601.27x = 2,209.98 × 938.39
  4. Step 4: Simplify right side
    1,601.27x = 2,073,822.75
  5. Step 5: Solve for x
    x = 2,073,822.75/1,601.27
  6. Step 6: Final answer
    x = 1,295.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.