Home / 1,988.70-2,982.92-527.87

Finding the Fourth Proportional to 1,988.70, 2,982.92 and 527.87

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Solution

The fourth proportional to 1,988.70, 2,982.92 and 527.87 is: 791.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.70 : 2,982.92 = 527.87 : x
  2. Step 2: Convert to fraction form
    1,988.70/2,982.92 = 527.87/x
  3. Step 3: Cross multiply
    1,988.70x = 2,982.92 × 527.87
  4. Step 4: Simplify right side
    1,988.70x = 1,574,576.43
  5. Step 5: Solve for x
    x = 1,574,576.43/1,988.70
  6. Step 6: Final answer
    x = 791.76

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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.