Home / 1,288.20-1,919.04-1,224.84

Finding the Fourth Proportional to 1,288.20, 1,919.04 and 1,224.84

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Solution

The fourth proportional to 1,288.20, 1,919.04 and 1,224.84 is: 1,824.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288.20 : 1,919.04 = 1,224.84 : x
  2. Step 2: Convert to fraction form
    1,288.20/1,919.04 = 1,224.84/x
  3. Step 3: Cross multiply
    1,288.20x = 1,919.04 × 1,224.84
  4. Step 4: Simplify right side
    1,288.20x = 2,350,516.95
  5. Step 5: Solve for x
    x = 2,350,516.95/1,288.20
  6. Step 6: Final answer
    x = 1,824.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.