Home / 8,172.20-11,277.60-4,635.92

Finding the Fourth Proportional to 8,172.20, 11,277.60 and 4,635.92

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Solution

The fourth proportional to 8,172.20, 11,277.60 and 4,635.92 is: 6,397.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.20 : 11,277.60 = 4,635.92 : x
  2. Step 2: Convert to fraction form
    8,172.20/11,277.60 = 4,635.92/x
  3. Step 3: Cross multiply
    8,172.20x = 11,277.60 × 4,635.92
  4. Step 4: Simplify right side
    8,172.20x = 52,282,051.39
  5. Step 5: Solve for x
    x = 52,282,051.39/8,172.20
  6. Step 6: Final answer
    x = 6,397.55

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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.