Home / 7,914.48-11,864.35-2,987.38

Finding the Fourth Proportional to 7,914.48, 11,864.35 and 2,987.38

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Solution

The fourth proportional to 7,914.48, 11,864.35 and 2,987.38 is: 4,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,914.48 : 11,864.35 = 2,987.38 : x
  2. Step 2: Convert to fraction form
    7,914.48/11,864.35 = 2,987.38/x
  3. Step 3: Cross multiply
    7,914.48x = 11,864.35 × 2,987.38
  4. Step 4: Simplify right side
    7,914.48x = 35,443,321.90
  5. Step 5: Solve for x
    x = 35,443,321.90/7,914.48
  6. Step 6: Final answer
    x = 4,478.29

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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.