Home / 4,932.40-7,387.80-4,385.20

Finding the Fourth Proportional to 4,932.40, 7,387.80 and 4,385.20

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Solution

The fourth proportional to 4,932.40, 7,387.80 and 4,385.20 is: 6,568.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,932.40 : 7,387.80 = 4,385.20 : x
  2. Step 2: Convert to fraction form
    4,932.40/7,387.80 = 4,385.20/x
  3. Step 3: Cross multiply
    4,932.40x = 7,387.80 × 4,385.20
  4. Step 4: Simplify right side
    4,932.40x = 32,396,980.56
  5. Step 5: Solve for x
    x = 32,396,980.56/4,932.40
  6. Step 6: Final answer
    x = 6,568.20

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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.