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Finding the Fourth Proportional to 8,630.46, 12,945.69 and 2,390.52

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Solution

The fourth proportional to 8,630.46, 12,945.69 and 2,390.52 is: 3,585.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.46 : 12,945.69 = 2,390.52 : x
  2. Step 2: Convert to fraction form
    8,630.46/12,945.69 = 2,390.52/x
  3. Step 3: Cross multiply
    8,630.46x = 12,945.69 × 2,390.52
  4. Step 4: Simplify right side
    8,630.46x = 30,946,979.41
  5. Step 5: Solve for x
    x = 30,946,979.41/8,630.46
  6. Step 6: Final answer
    x = 3,585.79

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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.