Home / 7,928.13-11,882.04-2,991.90

Finding the Fourth Proportional to 7,928.13, 11,882.04 and 2,991.90

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Solution

The fourth proportional to 7,928.13, 11,882.04 and 2,991.90 is: 4,484.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.13 : 11,882.04 = 2,991.90 : x
  2. Step 2: Convert to fraction form
    7,928.13/11,882.04 = 2,991.90/x
  3. Step 3: Cross multiply
    7,928.13x = 11,882.04 × 2,991.90
  4. Step 4: Simplify right side
    7,928.13x = 35,549,875.48
  5. Step 5: Solve for x
    x = 35,549,875.48/7,928.13
  6. Step 6: Final answer
    x = 4,484.02

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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.