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Finding the Fourth Proportional to 2,917.15, 4,374.44 and 836.68

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Solution

The fourth proportional to 2,917.15, 4,374.44 and 836.68 is: 1,254.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.15 : 4,374.44 = 836.68 : x
  2. Step 2: Convert to fraction form
    2,917.15/4,374.44 = 836.68/x
  3. Step 3: Cross multiply
    2,917.15x = 4,374.44 × 836.68
  4. Step 4: Simplify right side
    2,917.15x = 3,660,013.21
  5. Step 5: Solve for x
    x = 3,660,013.21/2,917.15
  6. Step 6: Final answer
    x = 1,254.65

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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.