Home / 2,288.81-3,158.57-1,240.88

Finding the Fourth Proportional to 2,288.81, 3,158.57 and 1,240.88

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Solution

The fourth proportional to 2,288.81, 3,158.57 and 1,240.88 is: 1,712.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,288.81 : 3,158.57 = 1,240.88 : x
  2. Step 2: Convert to fraction form
    2,288.81/3,158.57 = 1,240.88/x
  3. Step 3: Cross multiply
    2,288.81x = 3,158.57 × 1,240.88
  4. Step 4: Simplify right side
    2,288.81x = 3,919,393.65
  5. Step 5: Solve for x
    x = 3,919,393.65/2,288.81
  6. Step 6: Final answer
    x = 1,712.41

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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.