Home / 2,853.80-4,278.46-1,123.72

Finding the Fourth Proportional to 2,853.80, 4,278.46 and 1,123.72

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Solution

The fourth proportional to 2,853.80, 4,278.46 and 1,123.72 is: 1,684.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.80 : 4,278.46 = 1,123.72 : x
  2. Step 2: Convert to fraction form
    2,853.80/4,278.46 = 1,123.72/x
  3. Step 3: Cross multiply
    2,853.80x = 4,278.46 × 1,123.72
  4. Step 4: Simplify right side
    2,853.80x = 4,807,791.07
  5. Step 5: Solve for x
    x = 4,807,791.07/2,853.80
  6. Step 6: Final answer
    x = 1,684.70

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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.