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Finding the Fourth Proportional to 2,565.39, 3,848.11 and 716.39

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Solution

The fourth proportional to 2,565.39, 3,848.11 and 716.39 is: 1,074.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565.39 : 3,848.11 = 716.39 : x
  2. Step 2: Convert to fraction form
    2,565.39/3,848.11 = 716.39/x
  3. Step 3: Cross multiply
    2,565.39x = 3,848.11 × 716.39
  4. Step 4: Simplify right side
    2,565.39x = 2,756,747.52
  5. Step 5: Solve for x
    x = 2,756,747.52/2,565.39
  6. Step 6: Final answer
    x = 1,074.59

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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.