Home / 7,451.90-11,215.68-5,612.30

Finding the Fourth Proportional to 7,451.90, 11,215.68 and 5,612.30

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Solution

The fourth proportional to 7,451.90, 11,215.68 and 5,612.30 is: 8,446.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,451.90 : 11,215.68 = 5,612.30 : x
  2. Step 2: Convert to fraction form
    7,451.90/11,215.68 = 5,612.30/x
  3. Step 3: Cross multiply
    7,451.90x = 11,215.68 × 5,612.30
  4. Step 4: Simplify right side
    7,451.90x = 62,945,760.86
  5. Step 5: Solve for x
    x = 62,945,760.86/7,451.90
  6. Step 6: Final answer
    x = 8,446.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.