Home / 2,517.86-3,474.64-1,398.80

Finding the Fourth Proportional to 2,517.86, 3,474.64 and 1,398.80

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Solution

The fourth proportional to 2,517.86, 3,474.64 and 1,398.80 is: 1,930.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.86 : 3,474.64 = 1,398.80 : x
  2. Step 2: Convert to fraction form
    2,517.86/3,474.64 = 1,398.80/x
  3. Step 3: Cross multiply
    2,517.86x = 3,474.64 × 1,398.80
  4. Step 4: Simplify right side
    2,517.86x = 4,860,326.43
  5. Step 5: Solve for x
    x = 4,860,326.43/2,517.86
  6. Step 6: Final answer
    x = 1,930.34

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1.5x scale

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.