Home / 5,178.17-7,761.83-2,255.69

Finding the Fourth Proportional to 5,178.17, 7,761.83 and 2,255.69

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Solution

The fourth proportional to 5,178.17, 7,761.83 and 2,255.69 is: 3,381.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.17 : 7,761.83 = 2,255.69 : x
  2. Step 2: Convert to fraction form
    5,178.17/7,761.83 = 2,255.69/x
  3. Step 3: Cross multiply
    5,178.17x = 7,761.83 × 2,255.69
  4. Step 4: Simplify right side
    5,178.17x = 17,508,232.23
  5. Step 5: Solve for x
    x = 17,508,232.23/5,178.17
  6. Step 6: Final answer
    x = 3,381.17

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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.