Home / 1,515.35-2,274.17-1,223.61

Finding the Fourth Proportional to 1,515.35, 2,274.17 and 1,223.61

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Solution

The fourth proportional to 1,515.35, 2,274.17 and 1,223.61 is: 1,836.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.35 : 2,274.17 = 1,223.61 : x
  2. Step 2: Convert to fraction form
    1,515.35/2,274.17 = 1,223.61/x
  3. Step 3: Cross multiply
    1,515.35x = 2,274.17 × 1,223.61
  4. Step 4: Simplify right side
    1,515.35x = 2,782,691.04
  5. Step 5: Solve for x
    x = 2,782,691.04/1,515.35
  6. Step 6: Final answer
    x = 1,836.34

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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.