Home / 1,323.46-1,983.79-543.12

Finding the Fourth Proportional to 1,323.46, 1,983.79 and 543.12

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Solution

The fourth proportional to 1,323.46, 1,983.79 and 543.12 is: 814.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.46 : 1,983.79 = 543.12 : x
  2. Step 2: Convert to fraction form
    1,323.46/1,983.79 = 543.12/x
  3. Step 3: Cross multiply
    1,323.46x = 1,983.79 × 543.12
  4. Step 4: Simplify right side
    1,323.46x = 1,077,436.02
  5. Step 5: Solve for x
    x = 1,077,436.02/1,323.46
  6. Step 6: Final answer
    x = 814.11

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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.