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Finding the Fourth Proportional to 8,456.70, 12,685.85 and 2,300.70

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Solution

The fourth proportional to 8,456.70, 12,685.85 and 2,300.70 is: 3,451.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.70 : 12,685.85 = 2,300.70 : x
  2. Step 2: Convert to fraction form
    8,456.70/12,685.85 = 2,300.70/x
  3. Step 3: Cross multiply
    8,456.70x = 12,685.85 × 2,300.70
  4. Step 4: Simplify right side
    8,456.70x = 29,186,335.10
  5. Step 5: Solve for x
    x = 29,186,335.10/8,456.70
  6. Step 6: Final answer
    x = 3,451.27

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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.