Home / 1,451.32-2,175.11-660.10

Finding the Fourth Proportional to 1,451.32, 2,175.11 and 660.10

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Solution

The fourth proportional to 1,451.32, 2,175.11 and 660.10 is: 989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.32 : 2,175.11 = 660.10 : x
  2. Step 2: Convert to fraction form
    1,451.32/2,175.11 = 660.10/x
  3. Step 3: Cross multiply
    1,451.32x = 2,175.11 × 660.10
  4. Step 4: Simplify right side
    1,451.32x = 1,435,786.32
  5. Step 5: Solve for x
    x = 1,435,786.32/1,451.32
  6. Step 6: Final answer
    x = 989.30

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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.