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Finding the Fourth Proportional to 10,652.46, 15,978.65 and 4,407.95

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Solution

The fourth proportional to 10,652.46, 15,978.65 and 4,407.95 is: 6,611.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,652.46 : 15,978.65 = 4,407.95 : x
  2. Step 2: Convert to fraction form
    10,652.46/15,978.65 = 4,407.95/x
  3. Step 3: Cross multiply
    10,652.46x = 15,978.65 × 4,407.95
  4. Step 4: Simplify right side
    10,652.46x = 70,432,988.33
  5. Step 5: Solve for x
    x = 70,432,988.33/10,652.46
  6. Step 6: Final answer
    x = 6,611.90

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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.