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Finding the Fourth Proportional to 8,840.10, 13,260.15 and 8,451.30

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Solution

The fourth proportional to 8,840.10, 13,260.15 and 8,451.30 is: 12,676.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,840.10 : 13,260.15 = 8,451.30 : x
  2. Step 2: Convert to fraction form
    8,840.10/13,260.15 = 8,451.30/x
  3. Step 3: Cross multiply
    8,840.10x = 13,260.15 × 8,451.30
  4. Step 4: Simplify right side
    8,840.10x = 112,065,505.70
  5. Step 5: Solve for x
    x = 112,065,505.70/8,840.10
  6. Step 6: Final answer
    x = 12,676.95

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Half scale
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Double scale
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Similar ratio
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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.