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Finding the Fourth Proportional to 6,158.56, 8,479.92 and 5,663.20

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Solution

The fourth proportional to 6,158.56, 8,479.92 and 5,663.20 is: 7,797.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,158.56 : 8,479.92 = 5,663.20 : x
  2. Step 2: Convert to fraction form
    6,158.56/8,479.92 = 5,663.20/x
  3. Step 3: Cross multiply
    6,158.56x = 8,479.92 × 5,663.20
  4. Step 4: Simplify right side
    6,158.56x = 48,023,482.94
  5. Step 5: Solve for x
    x = 48,023,482.94/6,158.56
  6. Step 6: Final answer
    x = 7,797.84

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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.