Home / 2,987.72-4,474.62-2,883.90

Finding the Fourth Proportional to 2,987.72, 4,474.62 and 2,883.90

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Solution

The fourth proportional to 2,987.72, 4,474.62 and 2,883.90 is: 4,319.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.72 : 4,474.62 = 2,883.90 : x
  2. Step 2: Convert to fraction form
    2,987.72/4,474.62 = 2,883.90/x
  3. Step 3: Cross multiply
    2,987.72x = 4,474.62 × 2,883.90
  4. Step 4: Simplify right side
    2,987.72x = 12,904,356.62
  5. Step 5: Solve for x
    x = 12,904,356.62/2,987.72
  6. Step 6: Final answer
    x = 4,319.14

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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.