Home / 2,288.90-3,158.78-1,294.34

Finding the Fourth Proportional to 2,288.90, 3,158.78 and 1,294.34

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Solution

The fourth proportional to 2,288.90, 3,158.78 and 1,294.34 is: 1,786.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,288.90 : 3,158.78 = 1,294.34 : x
  2. Step 2: Convert to fraction form
    2,288.90/3,158.78 = 1,294.34/x
  3. Step 3: Cross multiply
    2,288.90x = 3,158.78 × 1,294.34
  4. Step 4: Simplify right side
    2,288.90x = 4,088,546.44
  5. Step 5: Solve for x
    x = 4,088,546.44/2,288.90
  6. Step 6: Final answer
    x = 1,786.25

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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.