Home / 4,815.78-6,645.72-2,691.18

Finding the Fourth Proportional to 4,815.78, 6,645.72 and 2,691.18

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Solution

The fourth proportional to 4,815.78, 6,645.72 and 2,691.18 is: 3,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.78 : 6,645.72 = 2,691.18 : x
  2. Step 2: Convert to fraction form
    4,815.78/6,645.72 = 2,691.18/x
  3. Step 3: Cross multiply
    4,815.78x = 6,645.72 × 2,691.18
  4. Step 4: Simplify right side
    4,815.78x = 17,884,828.75
  5. Step 5: Solve for x
    x = 17,884,828.75/4,815.78
  6. Step 6: Final answer
    x = 3,713.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.