Home / 2,278.10-3,143.58-1,283.29

Finding the Fourth Proportional to 2,278.10, 3,143.58 and 1,283.29

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Solution

The fourth proportional to 2,278.10, 3,143.58 and 1,283.29 is: 1,770.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.10 : 3,143.58 = 1,283.29 : x
  2. Step 2: Convert to fraction form
    2,278.10/3,143.58 = 1,283.29/x
  3. Step 3: Cross multiply
    2,278.10x = 3,143.58 × 1,283.29
  4. Step 4: Simplify right side
    2,278.10x = 4,034,124.78
  5. Step 5: Solve for x
    x = 4,034,124.78/2,278.10
  6. Step 6: Final answer
    x = 1,770.83

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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.