Home / 1,323.39-1,985.10-543.50

Finding the Fourth Proportional to 1,323.39, 1,985.10 and 543.50

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Solution

The fourth proportional to 1,323.39, 1,985.10 and 543.50 is: 815.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.39 : 1,985.10 = 543.50 : x
  2. Step 2: Convert to fraction form
    1,323.39/1,985.10 = 543.50/x
  3. Step 3: Cross multiply
    1,323.39x = 1,985.10 × 543.50
  4. Step 4: Simplify right side
    1,323.39x = 1,078,901.85
  5. Step 5: Solve for x
    x = 1,078,901.85/1,323.39
  6. Step 6: Final answer
    x = 815.26

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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.