Home / 7,451.29-11,178.61-2,520.82

Finding the Fourth Proportional to 7,451.29, 11,178.61 and 2,520.82

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Solution

The fourth proportional to 7,451.29, 11,178.61 and 2,520.82 is: 3,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,451.29 : 11,178.61 = 2,520.82 : x
  2. Step 2: Convert to fraction form
    7,451.29/11,178.61 = 2,520.82/x
  3. Step 3: Cross multiply
    7,451.29x = 11,178.61 × 2,520.82
  4. Step 4: Simplify right side
    7,451.29x = 28,179,271.33
  5. Step 5: Solve for x
    x = 28,179,271.33/7,451.29
  6. Step 6: Final answer
    x = 3,781.80

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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.