Home / 8,909.73-13,367.57-2,987.21

Finding the Fourth Proportional to 8,909.73, 13,367.57 and 2,987.21

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Solution

The fourth proportional to 8,909.73, 13,367.57 and 2,987.21 is: 4,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.73 : 13,367.57 = 2,987.21 : x
  2. Step 2: Convert to fraction form
    8,909.73/13,367.57 = 2,987.21/x
  3. Step 3: Cross multiply
    8,909.73x = 13,367.57 × 2,987.21
  4. Step 4: Simplify right side
    8,909.73x = 39,931,657.01
  5. Step 5: Solve for x
    x = 39,931,657.01/8,909.73
  6. Step 6: Final answer
    x = 4,481.80

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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.