Home / 2,987.32-4,471.62-1,887.88

Finding the Fourth Proportional to 2,987.32, 4,471.62 and 1,887.88

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Solution

The fourth proportional to 2,987.32, 4,471.62 and 1,887.88 is: 2,825.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.32 : 4,471.62 = 1,887.88 : x
  2. Step 2: Convert to fraction form
    2,987.32/4,471.62 = 1,887.88/x
  3. Step 3: Cross multiply
    2,987.32x = 4,471.62 × 1,887.88
  4. Step 4: Simplify right side
    2,987.32x = 8,441,881.97
  5. Step 5: Solve for x
    x = 8,441,881.97/2,987.32
  6. Step 6: Final answer
    x = 2,825.90

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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.