Home / 8,939.90-12,331.46-5,757.35

Finding the Fourth Proportional to 8,939.90, 12,331.46 and 5,757.35

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Solution

The fourth proportional to 8,939.90, 12,331.46 and 5,757.35 is: 7,941.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.90 : 12,331.46 = 5,757.35 : x
  2. Step 2: Convert to fraction form
    8,939.90/12,331.46 = 5,757.35/x
  3. Step 3: Cross multiply
    8,939.90x = 12,331.46 × 5,757.35
  4. Step 4: Simplify right side
    8,939.90x = 70,996,440.79
  5. Step 5: Solve for x
    x = 70,996,440.79/8,939.90
  6. Step 6: Final answer
    x = 7,941.53

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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.