Home / 2,278.30-3,415.12-1,165.70

Finding the Fourth Proportional to 2,278.30, 3,415.12 and 1,165.70

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Solution

The fourth proportional to 2,278.30, 3,415.12 and 1,165.70 is: 1,747.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.30 : 3,415.12 = 1,165.70 : x
  2. Step 2: Convert to fraction form
    2,278.30/3,415.12 = 1,165.70/x
  3. Step 3: Cross multiply
    2,278.30x = 3,415.12 × 1,165.70
  4. Step 4: Simplify right side
    2,278.30x = 3,981,005.38
  5. Step 5: Solve for x
    x = 3,981,005.38/2,278.30
  6. Step 6: Final answer
    x = 1,747.36

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1.5x scale

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.