Home / 2,292.60-3,439.80-905.70

Finding the Fourth Proportional to 2,292.60, 3,439.80 and 905.70

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Solution

The fourth proportional to 2,292.60, 3,439.80 and 905.70 is: 1,358.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,292.60 : 3,439.80 = 905.70 : x
  2. Step 2: Convert to fraction form
    2,292.60/3,439.80 = 905.70/x
  3. Step 3: Cross multiply
    2,292.60x = 3,439.80 × 905.70
  4. Step 4: Simplify right side
    2,292.60x = 3,115,426.86
  5. Step 5: Solve for x
    x = 3,115,426.86/2,292.60
  6. Step 6: Final answer
    x = 1,358.91

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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.