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Finding the Fourth Proportional to 8,612.60, 12,901.80 and 6,755

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Solution

The fourth proportional to 8,612.60, 12,901.80 and 6,755 is: 10,119.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.60 : 12,901.80 = 6,755 : x
  2. Step 2: Convert to fraction form
    8,612.60/12,901.80 = 6,755/x
  3. Step 3: Cross multiply
    8,612.60x = 12,901.80 × 6,755
  4. Step 4: Simplify right side
    8,612.60x = 87,151,659
  5. Step 5: Solve for x
    x = 87,151,659/8,612.60
  6. Step 6: Final answer
    x = 10,119.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.