Home / 2,387.80-3,295.11-1,339.75

Finding the Fourth Proportional to 2,387.80, 3,295.11 and 1,339.75

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Solution

The fourth proportional to 2,387.80, 3,295.11 and 1,339.75 is: 1,848.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.80 : 3,295.11 = 1,339.75 : x
  2. Step 2: Convert to fraction form
    2,387.80/3,295.11 = 1,339.75/x
  3. Step 3: Cross multiply
    2,387.80x = 3,295.11 × 1,339.75
  4. Step 4: Simplify right side
    2,387.80x = 4,414,623.62
  5. Step 5: Solve for x
    x = 4,414,623.62/2,387.80
  6. Step 6: Final answer
    x = 1,848.82

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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.