Home / 2,922.60-4,382.40-1,278.24

Finding the Fourth Proportional to 2,922.60, 4,382.40 and 1,278.24

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Solution

The fourth proportional to 2,922.60, 4,382.40 and 1,278.24 is: 1,916.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,922.60 : 4,382.40 = 1,278.24 : x
  2. Step 2: Convert to fraction form
    2,922.60/4,382.40 = 1,278.24/x
  3. Step 3: Cross multiply
    2,922.60x = 4,382.40 × 1,278.24
  4. Step 4: Simplify right side
    2,922.60x = 5,601,758.98
  5. Step 5: Solve for x
    x = 5,601,758.98/2,922.60
  6. Step 6: Final answer
    x = 1,916.70

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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.