Home / 4,979.28-7,470.84-1,693.20

Finding the Fourth Proportional to 4,979.28, 7,470.84 and 1,693.20

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Solution

The fourth proportional to 4,979.28, 7,470.84 and 1,693.20 is: 2,540.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.28 : 7,470.84 = 1,693.20 : x
  2. Step 2: Convert to fraction form
    4,979.28/7,470.84 = 1,693.20/x
  3. Step 3: Cross multiply
    4,979.28x = 7,470.84 × 1,693.20
  4. Step 4: Simplify right side
    4,979.28x = 12,649,626.29
  5. Step 5: Solve for x
    x = 12,649,626.29/4,979.28
  6. Step 6: Final answer
    x = 2,540.45

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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.