Home / 3,126.11-4,690.24-1,178.87

Finding the Fourth Proportional to 3,126.11, 4,690.24 and 1,178.87

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Solution

The fourth proportional to 3,126.11, 4,690.24 and 1,178.87 is: 1,768.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.11 : 4,690.24 = 1,178.87 : x
  2. Step 2: Convert to fraction form
    3,126.11/4,690.24 = 1,178.87/x
  3. Step 3: Cross multiply
    3,126.11x = 4,690.24 × 1,178.87
  4. Step 4: Simplify right side
    3,126.11x = 5,529,159.78
  5. Step 5: Solve for x
    x = 5,529,159.78/3,126.11
  6. Step 6: Final answer
    x = 1,768.71

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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.