Home / 7,815.02-11,724.28-2,620.76

Finding the Fourth Proportional to 7,815.02, 11,724.28 and 2,620.76

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Solution

The fourth proportional to 7,815.02, 11,724.28 and 2,620.76 is: 3,931.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.02 : 11,724.28 = 2,620.76 : x
  2. Step 2: Convert to fraction form
    7,815.02/11,724.28 = 2,620.76/x
  3. Step 3: Cross multiply
    7,815.02x = 11,724.28 × 2,620.76
  4. Step 4: Simplify right side
    7,815.02x = 30,726,524.05
  5. Step 5: Solve for x
    x = 30,726,524.05/7,815.02
  6. Step 6: Final answer
    x = 3,931.73

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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.