Home / 2,288.71-3,158.40-1,240.77

Finding the Fourth Proportional to 2,288.71, 3,158.40 and 1,240.77

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Solution

The fourth proportional to 2,288.71, 3,158.40 and 1,240.77 is: 1,712.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,288.71 : 3,158.40 = 1,240.77 : x
  2. Step 2: Convert to fraction form
    2,288.71/3,158.40 = 1,240.77/x
  3. Step 3: Cross multiply
    2,288.71x = 3,158.40 × 1,240.77
  4. Step 4: Simplify right side
    2,288.71x = 3,918,847.97
  5. Step 5: Solve for x
    x = 3,918,847.97/2,288.71
  6. Step 6: Final answer
    x = 1,712.25

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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.