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Finding the Fourth Proportional to 6,439.46, 8,885.76 and 4,048.88

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Solution

The fourth proportional to 6,439.46, 8,885.76 and 4,048.88 is: 5,587.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.46 : 8,885.76 = 4,048.88 : x
  2. Step 2: Convert to fraction form
    6,439.46/8,885.76 = 4,048.88/x
  3. Step 3: Cross multiply
    6,439.46x = 8,885.76 × 4,048.88
  4. Step 4: Simplify right side
    6,439.46x = 35,977,375.95
  5. Step 5: Solve for x
    x = 35,977,375.95/6,439.46
  6. Step 6: Final answer
    x = 5,587.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.