Home / 1,523.90-2,287.20-1,305.20

Finding the Fourth Proportional to 1,523.90, 2,287.20 and 1,305.20

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Solution

The fourth proportional to 1,523.90, 2,287.20 and 1,305.20 is: 1,958.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,523.90 : 2,287.20 = 1,305.20 : x
  2. Step 2: Convert to fraction form
    1,523.90/2,287.20 = 1,305.20/x
  3. Step 3: Cross multiply
    1,523.90x = 2,287.20 × 1,305.20
  4. Step 4: Simplify right side
    1,523.90x = 2,985,253.44
  5. Step 5: Solve for x
    x = 2,985,253.44/1,523.90
  6. Step 6: Final answer
    x = 1,958.96

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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.