Home / 3,144.08-4,711.80-1,987.76

Finding the Fourth Proportional to 3,144.08, 4,711.80 and 1,987.76

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Solution

The fourth proportional to 3,144.08, 4,711.80 and 1,987.76 is: 2,978.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,144.08 : 4,711.80 = 1,987.76 : x
  2. Step 2: Convert to fraction form
    3,144.08/4,711.80 = 1,987.76/x
  3. Step 3: Cross multiply
    3,144.08x = 4,711.80 × 1,987.76
  4. Step 4: Simplify right side
    3,144.08x = 9,365,927.57
  5. Step 5: Solve for x
    x = 9,365,927.57/3,144.08
  6. Step 6: Final answer
    x = 2,978.91

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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.