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Finding the Fourth Proportional to 5,079.68, 7,620.80 and 1,616.96

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Solution

The fourth proportional to 5,079.68, 7,620.80 and 1,616.96 is: 2,425.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079.68 : 7,620.80 = 1,616.96 : x
  2. Step 2: Convert to fraction form
    5,079.68/7,620.80 = 1,616.96/x
  3. Step 3: Cross multiply
    5,079.68x = 7,620.80 × 1,616.96
  4. Step 4: Simplify right side
    5,079.68x = 12,322,528.77
  5. Step 5: Solve for x
    x = 12,322,528.77/5,079.68
  6. Step 6: Final answer
    x = 2,425.85

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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.