Home / 2,288.20-3,157.70-1,240.26

Finding the Fourth Proportional to 2,288.20, 3,157.70 and 1,240.26

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Solution

The fourth proportional to 2,288.20, 3,157.70 and 1,240.26 is: 1,711.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,288.20 : 3,157.70 = 1,240.26 : x
  2. Step 2: Convert to fraction form
    2,288.20/3,157.70 = 1,240.26/x
  3. Step 3: Cross multiply
    2,288.20x = 3,157.70 × 1,240.26
  4. Step 4: Simplify right side
    2,288.20x = 3,916,369.00
  5. Step 5: Solve for x
    x = 3,916,369.00/2,288.20
  6. Step 6: Final answer
    x = 1,711.55

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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.