Home / 1,112.24-1,666.20-1,020.44

Finding the Fourth Proportional to 1,112.24, 1,666.20 and 1,020.44

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Solution

The fourth proportional to 1,112.24, 1,666.20 and 1,020.44 is: 1,528.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.24 : 1,666.20 = 1,020.44 : x
  2. Step 2: Convert to fraction form
    1,112.24/1,666.20 = 1,020.44/x
  3. Step 3: Cross multiply
    1,112.24x = 1,666.20 × 1,020.44
  4. Step 4: Simplify right side
    1,112.24x = 1,700,257.13
  5. Step 5: Solve for x
    x = 1,700,257.13/1,112.24
  6. Step 6: Final answer
    x = 1,528.68

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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.