Home / 5,199.72-7,800.23-2,387.88

Finding the Fourth Proportional to 5,199.72, 7,800.23 and 2,387.88

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Solution

The fourth proportional to 5,199.72, 7,800.23 and 2,387.88 is: 3,582.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,199.72 : 7,800.23 = 2,387.88 : x
  2. Step 2: Convert to fraction form
    5,199.72/7,800.23 = 2,387.88/x
  3. Step 3: Cross multiply
    5,199.72x = 7,800.23 × 2,387.88
  4. Step 4: Simplify right side
    5,199.72x = 18,626,013.21
  5. Step 5: Solve for x
    x = 18,626,013.21/5,199.72
  6. Step 6: Final answer
    x = 3,582.12

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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.