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Finding the Fourth Proportional to 8,358.92, 12,538.98 and 2,812.23

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Solution

The fourth proportional to 8,358.92, 12,538.98 and 2,812.23 is: 4,218.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,358.92 : 12,538.98 = 2,812.23 : x
  2. Step 2: Convert to fraction form
    8,358.92/12,538.98 = 2,812.23/x
  3. Step 3: Cross multiply
    8,358.92x = 12,538.98 × 2,812.23
  4. Step 4: Simplify right side
    8,358.92x = 35,262,495.73
  5. Step 5: Solve for x
    x = 35,262,495.73/8,358.92
  6. Step 6: Final answer
    x = 4,218.55

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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.