Home / 2,288.14-3,157.65-1,240.21

Finding the Fourth Proportional to 2,288.14, 3,157.65 and 1,240.21

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Solution

The fourth proportional to 2,288.14, 3,157.65 and 1,240.21 is: 1,711.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,288.14 : 3,157.65 = 1,240.21 : x
  2. Step 2: Convert to fraction form
    2,288.14/3,157.65 = 1,240.21/x
  3. Step 3: Cross multiply
    2,288.14x = 3,157.65 × 1,240.21
  4. Step 4: Simplify right side
    2,288.14x = 3,916,149.11
  5. Step 5: Solve for x
    x = 3,916,149.11/2,288.14
  6. Step 6: Final answer
    x = 1,711.50

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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.