Home / 3,126.66-4,686.92-1,278.32

Finding the Fourth Proportional to 3,126.66, 4,686.92 and 1,278.32

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Solution

The fourth proportional to 3,126.66, 4,686.92 and 1,278.32 is: 1,916.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.66 : 4,686.92 = 1,278.32 : x
  2. Step 2: Convert to fraction form
    3,126.66/4,686.92 = 1,278.32/x
  3. Step 3: Cross multiply
    3,126.66x = 4,686.92 × 1,278.32
  4. Step 4: Simplify right side
    3,126.66x = 5,991,353.75
  5. Step 5: Solve for x
    x = 5,991,353.75/3,126.66
  6. Step 6: Final answer
    x = 1,916.22

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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.