Home / 7,815.08-11,721.71-3,134.90

Finding the Fourth Proportional to 7,815.08, 11,721.71 and 3,134.90

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Solution

The fourth proportional to 7,815.08, 11,721.71 and 3,134.90 is: 4,701.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.08 : 11,721.71 = 3,134.90 : x
  2. Step 2: Convert to fraction form
    7,815.08/11,721.71 = 3,134.90/x
  3. Step 3: Cross multiply
    7,815.08x = 11,721.71 × 3,134.90
  4. Step 4: Simplify right side
    7,815.08x = 36,746,425.82
  5. Step 5: Solve for x
    x = 36,746,425.82/7,815.08
  6. Step 6: Final answer
    x = 4,701.99

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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.