Home / 1,531.20-2,297.92-666.16

Finding the Fourth Proportional to 1,531.20, 2,297.92 and 666.16

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Solution

The fourth proportional to 1,531.20, 2,297.92 and 666.16 is: 999.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.20 : 2,297.92 = 666.16 : x
  2. Step 2: Convert to fraction form
    1,531.20/2,297.92 = 666.16/x
  3. Step 3: Cross multiply
    1,531.20x = 2,297.92 × 666.16
  4. Step 4: Simplify right side
    1,531.20x = 1,530,782.39
  5. Step 5: Solve for x
    x = 1,530,782.39/1,531.20
  6. Step 6: Final answer
    x = 999.73

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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.