Home / 7,820.20-11,731.84-3,437.65

Finding the Fourth Proportional to 7,820.20, 11,731.84 and 3,437.65

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Solution

The fourth proportional to 7,820.20, 11,731.84 and 3,437.65 is: 5,157.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.20 : 11,731.84 = 3,437.65 : x
  2. Step 2: Convert to fraction form
    7,820.20/11,731.84 = 3,437.65/x
  3. Step 3: Cross multiply
    7,820.20x = 11,731.84 × 3,437.65
  4. Step 4: Simplify right side
    7,820.20x = 40,329,932.85
  5. Step 5: Solve for x
    x = 40,329,932.85/7,820.20
  6. Step 6: Final answer
    x = 5,157.15

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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.