Home / 7,180.61-9,909.36-3,950.55

Finding the Fourth Proportional to 7,180.61, 9,909.36 and 3,950.55

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Solution

The fourth proportional to 7,180.61, 9,909.36 and 3,950.55 is: 5,451.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.61 : 9,909.36 = 3,950.55 : x
  2. Step 2: Convert to fraction form
    7,180.61/9,909.36 = 3,950.55/x
  3. Step 3: Cross multiply
    7,180.61x = 9,909.36 × 3,950.55
  4. Step 4: Simplify right side
    7,180.61x = 39,147,422.15
  5. Step 5: Solve for x
    x = 39,147,422.15/7,180.61
  6. Step 6: Final answer
    x = 5,451.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.