Home / 7,705.78-11,565.15-3,326.56

Finding the Fourth Proportional to 7,705.78, 11,565.15 and 3,326.56

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Solution

The fourth proportional to 7,705.78, 11,565.15 and 3,326.56 is: 4,992.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,705.78 : 11,565.15 = 3,326.56 : x
  2. Step 2: Convert to fraction form
    7,705.78/11,565.15 = 3,326.56/x
  3. Step 3: Cross multiply
    7,705.78x = 11,565.15 × 3,326.56
  4. Step 4: Simplify right side
    7,705.78x = 38,472,165.38
  5. Step 5: Solve for x
    x = 38,472,165.38/7,705.78
  6. Step 6: Final answer
    x = 4,992.64

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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.