Home / 1,520.24-2,280.74-826.72

Finding the Fourth Proportional to 1,520.24, 2,280.74 and 826.72

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Solution

The fourth proportional to 1,520.24, 2,280.74 and 826.72 is: 1,240.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.24 : 2,280.74 = 826.72 : x
  2. Step 2: Convert to fraction form
    1,520.24/2,280.74 = 826.72/x
  3. Step 3: Cross multiply
    1,520.24x = 2,280.74 × 826.72
  4. Step 4: Simplify right side
    1,520.24x = 1,885,523.54
  5. Step 5: Solve for x
    x = 1,885,523.54/1,520.24
  6. Step 6: Final answer
    x = 1,240.28

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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.