Home / 2,047.20-2,825.13-1,115.70

Finding the Fourth Proportional to 2,047.20, 2,825.13 and 1,115.70

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Solution

The fourth proportional to 2,047.20, 2,825.13 and 1,115.70 is: 1,539.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,047.20 : 2,825.13 = 1,115.70 : x
  2. Step 2: Convert to fraction form
    2,047.20/2,825.13 = 1,115.70/x
  3. Step 3: Cross multiply
    2,047.20x = 2,825.13 × 1,115.70
  4. Step 4: Simplify right side
    2,047.20x = 3,151,997.54
  5. Step 5: Solve for x
    x = 3,151,997.54/2,047.20
  6. Step 6: Final answer
    x = 1,539.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.