Home / 4,987.60-6,882.42-2,891.50

Finding the Fourth Proportional to 4,987.60, 6,882.42 and 2,891.50

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Solution

The fourth proportional to 4,987.60, 6,882.42 and 2,891.50 is: 3,990.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.60 : 6,882.42 = 2,891.50 : x
  2. Step 2: Convert to fraction form
    4,987.60/6,882.42 = 2,891.50/x
  3. Step 3: Cross multiply
    4,987.60x = 6,882.42 × 2,891.50
  4. Step 4: Simplify right side
    4,987.60x = 19,900,517.43
  5. Step 5: Solve for x
    x = 19,900,517.43/4,987.60
  6. Step 6: Final answer
    x = 3,990.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.