Home / 5,089.70-7,019.90-4,382.78

Finding the Fourth Proportional to 5,089.70, 7,019.90 and 4,382.78

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Solution

The fourth proportional to 5,089.70, 7,019.90 and 4,382.78 is: 6,044.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,089.70 : 7,019.90 = 4,382.78 : x
  2. Step 2: Convert to fraction form
    5,089.70/7,019.90 = 4,382.78/x
  3. Step 3: Cross multiply
    5,089.70x = 7,019.90 × 4,382.78
  4. Step 4: Simplify right side
    5,089.70x = 30,766,653.18
  5. Step 5: Solve for x
    x = 30,766,653.18/5,089.70
  6. Step 6: Final answer
    x = 6,044.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.