Home / 1,770.24-2,661.12-1,217.28

Finding the Fourth Proportional to 1,770.24, 2,661.12 and 1,217.28

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Solution

The fourth proportional to 1,770.24, 2,661.12 and 1,217.28 is: 1,829.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.24 : 2,661.12 = 1,217.28 : x
  2. Step 2: Convert to fraction form
    1,770.24/2,661.12 = 1,217.28/x
  3. Step 3: Cross multiply
    1,770.24x = 2,661.12 × 1,217.28
  4. Step 4: Simplify right side
    1,770.24x = 3,239,328.15
  5. Step 5: Solve for x
    x = 3,239,328.15/1,770.24
  6. Step 6: Final answer
    x = 1,829.88

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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.