Home / 3,159.24-4,360.50-1,917

Finding the Fourth Proportional to 3,159.24, 4,360.50 and 1,917

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Solution

The fourth proportional to 3,159.24, 4,360.50 and 1,917 is: 2,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.24 : 4,360.50 = 1,917 : x
  2. Step 2: Convert to fraction form
    3,159.24/4,360.50 = 1,917/x
  3. Step 3: Cross multiply
    3,159.24x = 4,360.50 × 1,917
  4. Step 4: Simplify right side
    3,159.24x = 8,359,078.50
  5. Step 5: Solve for x
    x = 8,359,078.50/3,159.24
  6. Step 6: Final answer
    x = 2,645.91

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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.