Home / 1,426.15-2,138.30-604.20

Finding the Fourth Proportional to 1,426.15, 2,138.30 and 604.20

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Solution

The fourth proportional to 1,426.15, 2,138.30 and 604.20 is: 905.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.15 : 2,138.30 = 604.20 : x
  2. Step 2: Convert to fraction form
    1,426.15/2,138.30 = 604.20/x
  3. Step 3: Cross multiply
    1,426.15x = 2,138.30 × 604.20
  4. Step 4: Simplify right side
    1,426.15x = 1,291,960.86
  5. Step 5: Solve for x
    x = 1,291,960.86/1,426.15
  6. Step 6: Final answer
    x = 905.91

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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.