Home / 3,167.20-4,338.02-2,987.74

Finding the Fourth Proportional to 3,167.20, 4,338.02 and 2,987.74

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Solution

The fourth proportional to 3,167.20, 4,338.02 and 2,987.74 is: 4,092.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.20 : 4,338.02 = 2,987.74 : x
  2. Step 2: Convert to fraction form
    3,167.20/4,338.02 = 2,987.74/x
  3. Step 3: Cross multiply
    3,167.20x = 4,338.02 × 2,987.74
  4. Step 4: Simplify right side
    3,167.20x = 12,960,875.87
  5. Step 5: Solve for x
    x = 12,960,875.87/3,167.20
  6. Step 6: Final answer
    x = 4,092.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.