Home / 2,292.68-3,440.44-905.78

Finding the Fourth Proportional to 2,292.68, 3,440.44 and 905.78

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Solution

The fourth proportional to 2,292.68, 3,440.44 and 905.78 is: 1,359.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,292.68 : 3,440.44 = 905.78 : x
  2. Step 2: Convert to fraction form
    2,292.68/3,440.44 = 905.78/x
  3. Step 3: Cross multiply
    2,292.68x = 3,440.44 × 905.78
  4. Step 4: Simplify right side
    2,292.68x = 3,116,281.74
  5. Step 5: Solve for x
    x = 3,116,281.74/2,292.68
  6. Step 6: Final answer
    x = 1,359.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.