Home / 2,235.38-3,084.54-1,278.28

Finding the Fourth Proportional to 2,235.38, 3,084.54 and 1,278.28

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Solution

The fourth proportional to 2,235.38, 3,084.54 and 1,278.28 is: 1,763.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,235.38 : 3,084.54 = 1,278.28 : x
  2. Step 2: Convert to fraction form
    2,235.38/3,084.54 = 1,278.28/x
  3. Step 3: Cross multiply
    2,235.38x = 3,084.54 × 1,278.28
  4. Step 4: Simplify right side
    2,235.38x = 3,942,905.79
  5. Step 5: Solve for x
    x = 3,942,905.79/2,235.38
  6. Step 6: Final answer
    x = 1,763.86

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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.