Home / 8,979.90-13,470.96-3,057.78

Finding the Fourth Proportional to 8,979.90, 13,470.96 and 3,057.78

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Solution

The fourth proportional to 8,979.90, 13,470.96 and 3,057.78 is: 4,587.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.90 : 13,470.96 = 3,057.78 : x
  2. Step 2: Convert to fraction form
    8,979.90/13,470.96 = 3,057.78/x
  3. Step 3: Cross multiply
    8,979.90x = 13,470.96 × 3,057.78
  4. Step 4: Simplify right side
    8,979.90x = 41,191,232.07
  5. Step 5: Solve for x
    x = 41,191,232.07/8,979.90
  6. Step 6: Final answer
    x = 4,587.05

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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.