Home / 3,126.10-4,689.94-1,178.32

Finding the Fourth Proportional to 3,126.10, 4,689.94 and 1,178.32

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Solution

The fourth proportional to 3,126.10, 4,689.94 and 1,178.32 is: 1,767.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.10 : 4,689.94 = 1,178.32 : x
  2. Step 2: Convert to fraction form
    3,126.10/4,689.94 = 1,178.32/x
  3. Step 3: Cross multiply
    3,126.10x = 4,689.94 × 1,178.32
  4. Step 4: Simplify right side
    3,126.10x = 5,526,250.10
  5. Step 5: Solve for x
    x = 5,526,250.10/3,126.10
  6. Step 6: Final answer
    x = 1,767.78

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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.