Home / 7,521.28-11,273.57-3,815.86

Finding the Fourth Proportional to 7,521.28, 11,273.57 and 3,815.86

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Solution

The fourth proportional to 7,521.28, 11,273.57 and 3,815.86 is: 5,719.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,521.28 : 11,273.57 = 3,815.86 : x
  2. Step 2: Convert to fraction form
    7,521.28/11,273.57 = 3,815.86/x
  3. Step 3: Cross multiply
    7,521.28x = 11,273.57 × 3,815.86
  4. Step 4: Simplify right side
    7,521.28x = 43,018,364.82
  5. Step 5: Solve for x
    x = 43,018,364.82/7,521.28
  6. Step 6: Final answer
    x = 5,719.55

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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.