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Finding the Fourth Proportional to 9,986.70, 14,987.80 and 3,752.39

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Solution

The fourth proportional to 9,986.70, 14,987.80 and 3,752.39 is: 5,631.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.70 : 14,987.80 = 3,752.39 : x
  2. Step 2: Convert to fraction form
    9,986.70/14,987.80 = 3,752.39/x
  3. Step 3: Cross multiply
    9,986.70x = 14,987.80 × 3,752.39
  4. Step 4: Simplify right side
    9,986.70x = 56,239,977.14
  5. Step 5: Solve for x
    x = 56,239,977.14/9,986.70
  6. Step 6: Final answer
    x = 5,631.49

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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.