Home / 4,139.29-5,711.06-3,931.52

Finding the Fourth Proportional to 4,139.29, 5,711.06 and 3,931.52

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Solution

The fourth proportional to 4,139.29, 5,711.06 and 3,931.52 is: 5,424.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,139.29 : 5,711.06 = 3,931.52 : x
  2. Step 2: Convert to fraction form
    4,139.29/5,711.06 = 3,931.52/x
  3. Step 3: Cross multiply
    4,139.29x = 5,711.06 × 3,931.52
  4. Step 4: Simplify right side
    4,139.29x = 22,453,126.95
  5. Step 5: Solve for x
    x = 22,453,126.95/4,139.29
  6. Step 6: Final answer
    x = 5,424.40

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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.