Home / 4,179.28-6,264.87-1,987.42

Finding the Fourth Proportional to 4,179.28, 6,264.87 and 1,987.42

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Solution

The fourth proportional to 4,179.28, 6,264.87 and 1,987.42 is: 2,979.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,179.28 : 6,264.87 = 1,987.42 : x
  2. Step 2: Convert to fraction form
    4,179.28/6,264.87 = 1,987.42/x
  3. Step 3: Cross multiply
    4,179.28x = 6,264.87 × 1,987.42
  4. Step 4: Simplify right side
    4,179.28x = 12,450,927.94
  5. Step 5: Solve for x
    x = 12,450,927.94/4,179.28
  6. Step 6: Final answer
    x = 2,979.20

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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.