Home / 1,127.24-1,689.10-736.55

Finding the Fourth Proportional to 1,127.24, 1,689.10 and 736.55

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Solution

The fourth proportional to 1,127.24, 1,689.10 and 736.55 is: 1,103.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.24 : 1,689.10 = 736.55 : x
  2. Step 2: Convert to fraction form
    1,127.24/1,689.10 = 736.55/x
  3. Step 3: Cross multiply
    1,127.24x = 1,689.10 × 736.55
  4. Step 4: Simplify right side
    1,127.24x = 1,244,106.61
  5. Step 5: Solve for x
    x = 1,244,106.61/1,127.24
  6. Step 6: Final answer
    x = 1,103.67

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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.