Home / 8,939.91-12,331.47-5,757.33

Finding the Fourth Proportional to 8,939.91, 12,331.47 and 5,757.33

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Solution

The fourth proportional to 8,939.91, 12,331.47 and 5,757.33 is: 7,941.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.91 : 12,331.47 = 5,757.33 : x
  2. Step 2: Convert to fraction form
    8,939.91/12,331.47 = 5,757.33/x
  3. Step 3: Cross multiply
    8,939.91x = 12,331.47 × 5,757.33
  4. Step 4: Simplify right side
    8,939.91x = 70,996,342.18
  5. Step 5: Solve for x
    x = 70,996,342.18/8,939.91
  6. Step 6: Final answer
    x = 7,941.51

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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.