Home / 8,789.76-12,126.85-5,010.20

Finding the Fourth Proportional to 8,789.76, 12,126.85 and 5,010.20

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Solution

The fourth proportional to 8,789.76, 12,126.85 and 5,010.20 is: 6,912.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.76 : 12,126.85 = 5,010.20 : x
  2. Step 2: Convert to fraction form
    8,789.76/12,126.85 = 5,010.20/x
  3. Step 3: Cross multiply
    8,789.76x = 12,126.85 × 5,010.20
  4. Step 4: Simplify right side
    8,789.76x = 60,757,943.87
  5. Step 5: Solve for x
    x = 60,757,943.87/8,789.76
  6. Step 6: Final answer
    x = 6,912.36

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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.