Home / 8,172.28-11,278.38-4,635.64

Finding the Fourth Proportional to 8,172.28, 11,278.38 and 4,635.64

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Solution

The fourth proportional to 8,172.28, 11,278.38 and 4,635.64 is: 6,397.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.28 : 11,278.38 = 4,635.64 : x
  2. Step 2: Convert to fraction form
    8,172.28/11,278.38 = 4,635.64/x
  3. Step 3: Cross multiply
    8,172.28x = 11,278.38 × 4,635.64
  4. Step 4: Simplify right side
    8,172.28x = 52,282,509.46
  5. Step 5: Solve for x
    x = 52,282,509.46/8,172.28
  6. Step 6: Final answer
    x = 6,397.54

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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.