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Finding the Fourth Proportional to 8,739.88, 12,061.02 and 4,761.08

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Solution

The fourth proportional to 8,739.88, 12,061.02 and 4,761.08 is: 6,570.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.88 : 12,061.02 = 4,761.08 : x
  2. Step 2: Convert to fraction form
    8,739.88/12,061.02 = 4,761.08/x
  3. Step 3: Cross multiply
    8,739.88x = 12,061.02 × 4,761.08
  4. Step 4: Simplify right side
    8,739.88x = 57,423,481.10
  5. Step 5: Solve for x
    x = 57,423,481.10/8,739.88
  6. Step 6: Final answer
    x = 6,570.28

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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.