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Finding the Fourth Proportional to 8,739, 12,060.48 and 5,380.98

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Solution

The fourth proportional to 8,739, 12,060.48 and 5,380.98 is: 7,426.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739 : 12,060.48 = 5,380.98 : x
  2. Step 2: Convert to fraction form
    8,739/12,060.48 = 5,380.98/x
  3. Step 3: Cross multiply
    8,739x = 12,060.48 × 5,380.98
  4. Step 4: Simplify right side
    8,739x = 64,897,201.67
  5. Step 5: Solve for x
    x = 64,897,201.67/8,739
  6. Step 6: Final answer
    x = 7,426.16

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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.