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Finding the Fourth Proportional to 8,124.59, 12,186.88 and 2,930.46

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Solution

The fourth proportional to 8,124.59, 12,186.88 and 2,930.46 is: 4,395.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,124.59 : 12,186.88 = 2,930.46 : x
  2. Step 2: Convert to fraction form
    8,124.59/12,186.88 = 2,930.46/x
  3. Step 3: Cross multiply
    8,124.59x = 12,186.88 × 2,930.46
  4. Step 4: Simplify right side
    8,124.59x = 35,713,157.04
  5. Step 5: Solve for x
    x = 35,713,157.04/8,124.59
  6. Step 6: Final answer
    x = 4,395.69

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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.