Home / 1,982.13-2,973.18-1,323.39

Finding the Fourth Proportional to 1,982.13, 2,973.18 and 1,323.39

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Solution

The fourth proportional to 1,982.13, 2,973.18 and 1,323.39 is: 1,985.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.13 : 2,973.18 = 1,323.39 : x
  2. Step 2: Convert to fraction form
    1,982.13/2,973.18 = 1,323.39/x
  3. Step 3: Cross multiply
    1,982.13x = 2,973.18 × 1,323.39
  4. Step 4: Simplify right side
    1,982.13x = 3,934,676.68
  5. Step 5: Solve for x
    x = 3,934,676.68/1,982.13
  6. Step 6: Final answer
    x = 1,985.07

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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.