Home / 7,987.34-11,981.88-3,061.16

Finding the Fourth Proportional to 7,987.34, 11,981.88 and 3,061.16

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Solution

The fourth proportional to 7,987.34, 11,981.88 and 3,061.16 is: 4,592.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.34 : 11,981.88 = 3,061.16 : x
  2. Step 2: Convert to fraction form
    7,987.34/11,981.88 = 3,061.16/x
  3. Step 3: Cross multiply
    7,987.34x = 11,981.88 × 3,061.16
  4. Step 4: Simplify right side
    7,987.34x = 36,678,451.78
  5. Step 5: Solve for x
    x = 36,678,451.78/7,987.34
  6. Step 6: Final answer
    x = 4,592.07

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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.