Home / 1,321.29-1,981.53-1,134.36

Finding the Fourth Proportional to 1,321.29, 1,981.53 and 1,134.36

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Solution

The fourth proportional to 1,321.29, 1,981.53 and 1,134.36 is: 1,701.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321.29 : 1,981.53 = 1,134.36 : x
  2. Step 2: Convert to fraction form
    1,321.29/1,981.53 = 1,134.36/x
  3. Step 3: Cross multiply
    1,321.29x = 1,981.53 × 1,134.36
  4. Step 4: Simplify right side
    1,321.29x = 2,247,768.37
  5. Step 5: Solve for x
    x = 2,247,768.37/1,321.29
  6. Step 6: Final answer
    x = 1,701.19

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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.