Home / 4,987.28-7,482.64-2,215.90

Finding the Fourth Proportional to 4,987.28, 7,482.64 and 2,215.90

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Solution

The fourth proportional to 4,987.28, 7,482.64 and 2,215.90 is: 3,324.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.28 : 7,482.64 = 2,215.90 : x
  2. Step 2: Convert to fraction form
    4,987.28/7,482.64 = 2,215.90/x
  3. Step 3: Cross multiply
    4,987.28x = 7,482.64 × 2,215.90
  4. Step 4: Simplify right side
    4,987.28x = 16,580,757.73
  5. Step 5: Solve for x
    x = 16,580,757.73/4,987.28
  6. Step 6: Final answer
    x = 3,324.61

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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.