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Finding the Fourth Proportional to 8,776.60, 12,108.90 and 6,259.12

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Solution

The fourth proportional to 8,776.60, 12,108.90 and 6,259.12 is: 8,635.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,776.60 : 12,108.90 = 6,259.12 : x
  2. Step 2: Convert to fraction form
    8,776.60/12,108.90 = 6,259.12/x
  3. Step 3: Cross multiply
    8,776.60x = 12,108.90 × 6,259.12
  4. Step 4: Simplify right side
    8,776.60x = 75,791,058.17
  5. Step 5: Solve for x
    x = 75,791,058.17/8,776.60
  6. Step 6: Final answer
    x = 8,635.58

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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.