Home / 3,126.02-4,687.30-1,278.43

Finding the Fourth Proportional to 3,126.02, 4,687.30 and 1,278.43

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Solution

The fourth proportional to 3,126.02, 4,687.30 and 1,278.43 is: 1,916.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.02 : 4,687.30 = 1,278.43 : x
  2. Step 2: Convert to fraction form
    3,126.02/4,687.30 = 1,278.43/x
  3. Step 3: Cross multiply
    3,126.02x = 4,687.30 × 1,278.43
  4. Step 4: Simplify right side
    3,126.02x = 5,992,406.75
  5. Step 5: Solve for x
    x = 5,992,406.75/3,126.02
  6. Step 6: Final answer
    x = 1,916.94

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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.