Home / 7,215.20-10,807.68-3,741.92

Finding the Fourth Proportional to 7,215.20, 10,807.68 and 3,741.92

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Solution

The fourth proportional to 7,215.20, 10,807.68 and 3,741.92 is: 5,605.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.20 : 10,807.68 = 3,741.92 : x
  2. Step 2: Convert to fraction form
    7,215.20/10,807.68 = 3,741.92/x
  3. Step 3: Cross multiply
    7,215.20x = 10,807.68 × 3,741.92
  4. Step 4: Simplify right side
    7,215.20x = 40,441,473.95
  5. Step 5: Solve for x
    x = 40,441,473.95/7,215.20
  6. Step 6: Final answer
    x = 5,605.04

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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.