Home / 2,288.29-3,157.85-1,240.36

Finding the Fourth Proportional to 2,288.29, 3,157.85 and 1,240.36

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Solution

The fourth proportional to 2,288.29, 3,157.85 and 1,240.36 is: 1,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,288.29 : 3,157.85 = 1,240.36 : x
  2. Step 2: Convert to fraction form
    2,288.29/3,157.85 = 1,240.36/x
  3. Step 3: Cross multiply
    2,288.29x = 3,157.85 × 1,240.36
  4. Step 4: Simplify right side
    2,288.29x = 3,916,870.83
  5. Step 5: Solve for x
    x = 3,916,870.83/2,288.29
  6. Step 6: Final answer
    x = 1,711.70

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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.