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Finding the Fourth Proportional to 2,565.68, 3,848.78 and 833.90

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Solution

The fourth proportional to 2,565.68, 3,848.78 and 833.90 is: 1,250.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565.68 : 3,848.78 = 833.90 : x
  2. Step 2: Convert to fraction form
    2,565.68/3,848.78 = 833.90/x
  3. Step 3: Cross multiply
    2,565.68x = 3,848.78 × 833.90
  4. Step 4: Simplify right side
    2,565.68x = 3,209,480.48
  5. Step 5: Solve for x
    x = 3,209,480.48/2,565.68
  6. Step 6: Final answer
    x = 1,250.93

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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.