Home / 8,711.19-12,020.13-5,174.33

Finding the Fourth Proportional to 8,711.19, 12,020.13 and 5,174.33

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Solution

The fourth proportional to 8,711.19, 12,020.13 and 5,174.33 is: 7,139.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,711.19 : 12,020.13 = 5,174.33 : x
  2. Step 2: Convert to fraction form
    8,711.19/12,020.13 = 5,174.33/x
  3. Step 3: Cross multiply
    8,711.19x = 12,020.13 × 5,174.33
  4. Step 4: Simplify right side
    8,711.19x = 62,196,059.16
  5. Step 5: Solve for x
    x = 62,196,059.16/8,711.19
  6. Step 6: Final answer
    x = 7,139.79

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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.