Home / 2,347.79-3,521.88-1,115.78

Finding the Fourth Proportional to 2,347.79, 3,521.88 and 1,115.78

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Solution

The fourth proportional to 2,347.79, 3,521.88 and 1,115.78 is: 1,673.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.79 : 3,521.88 = 1,115.78 : x
  2. Step 2: Convert to fraction form
    2,347.79/3,521.88 = 1,115.78/x
  3. Step 3: Cross multiply
    2,347.79x = 3,521.88 × 1,115.78
  4. Step 4: Simplify right side
    2,347.79x = 3,929,625.66
  5. Step 5: Solve for x
    x = 3,929,625.66/2,347.79
  6. Step 6: Final answer
    x = 1,673.76

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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.