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Finding the Fourth Proportional to 9,987, 14,980.44 and 2,591.44

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Solution

The fourth proportional to 9,987, 14,980.44 and 2,591.44 is: 3,887.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987 : 14,980.44 = 2,591.44 : x
  2. Step 2: Convert to fraction form
    9,987/14,980.44 = 2,591.44/x
  3. Step 3: Cross multiply
    9,987x = 14,980.44 × 2,591.44
  4. Step 4: Simplify right side
    9,987x = 38,820,911.43
  5. Step 5: Solve for x
    x = 38,820,911.43/9,987
  6. Step 6: Final answer
    x = 3,887.14

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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.