Home / 1,244.64-1,717.68-1,089.12

Finding the Fourth Proportional to 1,244.64, 1,717.68 and 1,089.12

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Solution

The fourth proportional to 1,244.64, 1,717.68 and 1,089.12 is: 1,503.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244.64 : 1,717.68 = 1,089.12 : x
  2. Step 2: Convert to fraction form
    1,244.64/1,717.68 = 1,089.12/x
  3. Step 3: Cross multiply
    1,244.64x = 1,717.68 × 1,089.12
  4. Step 4: Simplify right side
    1,244.64x = 1,870,759.64
  5. Step 5: Solve for x
    x = 1,870,759.64/1,244.64
  6. Step 6: Final answer
    x = 1,503.05

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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.