Home / 3,909.95-5,393.71-2,650.58

Finding the Fourth Proportional to 3,909.95, 5,393.71 and 2,650.58

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Solution

The fourth proportional to 3,909.95, 5,393.71 and 2,650.58 is: 3,656.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.95 : 5,393.71 = 2,650.58 : x
  2. Step 2: Convert to fraction form
    3,909.95/5,393.71 = 2,650.58/x
  3. Step 3: Cross multiply
    3,909.95x = 5,393.71 × 2,650.58
  4. Step 4: Simplify right side
    3,909.95x = 14,296,456.42
  5. Step 5: Solve for x
    x = 14,296,456.42/3,909.95
  6. Step 6: Final answer
    x = 3,656.43

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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.