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Finding the Fourth Proportional to 8,472.52, 12,705.63 and 4,311.10

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Solution

The fourth proportional to 8,472.52, 12,705.63 and 4,311.10 is: 6,465.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.52 : 12,705.63 = 4,311.10 : x
  2. Step 2: Convert to fraction form
    8,472.52/12,705.63 = 4,311.10/x
  3. Step 3: Cross multiply
    8,472.52x = 12,705.63 × 4,311.10
  4. Step 4: Simplify right side
    8,472.52x = 54,775,241.49
  5. Step 5: Solve for x
    x = 54,775,241.49/8,472.52
  6. Step 6: Final answer
    x = 6,465.05

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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.