Home / 3,909.26-5,864.85-2,987.66

Finding the Fourth Proportional to 3,909.26, 5,864.85 and 2,987.66

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Solution

The fourth proportional to 3,909.26, 5,864.85 and 2,987.66 is: 4,482.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.26 : 5,864.85 = 2,987.66 : x
  2. Step 2: Convert to fraction form
    3,909.26/5,864.85 = 2,987.66/x
  3. Step 3: Cross multiply
    3,909.26x = 5,864.85 × 2,987.66
  4. Step 4: Simplify right side
    3,909.26x = 17,522,177.75
  5. Step 5: Solve for x
    x = 17,522,177.75/3,909.26
  6. Step 6: Final answer
    x = 4,482.22

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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.