Home / 1,992.20-2,988.41-531.32

Finding the Fourth Proportional to 1,992.20, 2,988.41 and 531.32

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Solution

The fourth proportional to 1,992.20, 2,988.41 and 531.32 is: 797.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.20 : 2,988.41 = 531.32 : x
  2. Step 2: Convert to fraction form
    1,992.20/2,988.41 = 531.32/x
  3. Step 3: Cross multiply
    1,992.20x = 2,988.41 × 531.32
  4. Step 4: Simplify right side
    1,992.20x = 1,587,784.40
  5. Step 5: Solve for x
    x = 1,587,784.40/1,992.20
  6. Step 6: Final answer
    x = 797.00

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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.