Home / 7,132.28-9,840.96-4,478.72

Finding the Fourth Proportional to 7,132.28, 9,840.96 and 4,478.72

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Solution

The fourth proportional to 7,132.28, 9,840.96 and 4,478.72 is: 6,179.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,132.28 : 9,840.96 = 4,478.72 : x
  2. Step 2: Convert to fraction form
    7,132.28/9,840.96 = 4,478.72/x
  3. Step 3: Cross multiply
    7,132.28x = 9,840.96 × 4,478.72
  4. Step 4: Simplify right side
    7,132.28x = 44,074,855.17
  5. Step 5: Solve for x
    x = 44,074,855.17/7,132.28
  6. Step 6: Final answer
    x = 6,179.63

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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.