Home / 1,988.20-2,982.72-601.64

Finding the Fourth Proportional to 1,988.20, 2,982.72 and 601.64

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Solution

The fourth proportional to 1,988.20, 2,982.72 and 601.64 is: 902.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.20 : 2,982.72 = 601.64 : x
  2. Step 2: Convert to fraction form
    1,988.20/2,982.72 = 601.64/x
  3. Step 3: Cross multiply
    1,988.20x = 2,982.72 × 601.64
  4. Step 4: Simplify right side
    1,988.20x = 1,794,523.66
  5. Step 5: Solve for x
    x = 1,794,523.66/1,988.20
  6. Step 6: Final answer
    x = 902.59

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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.