Home / 1,580.20-2,179.30-1,426.60

Finding the Fourth Proportional to 1,580.20, 2,179.30 and 1,426.60

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Solution

The fourth proportional to 1,580.20, 2,179.30 and 1,426.60 is: 1,967.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.20 : 2,179.30 = 1,426.60 : x
  2. Step 2: Convert to fraction form
    1,580.20/2,179.30 = 1,426.60/x
  3. Step 3: Cross multiply
    1,580.20x = 2,179.30 × 1,426.60
  4. Step 4: Simplify right side
    1,580.20x = 3,108,989.38
  5. Step 5: Solve for x
    x = 3,108,989.38/1,580.20
  6. Step 6: Final answer
    x = 1,967.47

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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.