Home / 1,989.38-2,984.14-528.54

Finding the Fourth Proportional to 1,989.38, 2,984.14 and 528.54

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Solution

The fourth proportional to 1,989.38, 2,984.14 and 528.54 is: 792.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.38 : 2,984.14 = 528.54 : x
  2. Step 2: Convert to fraction form
    1,989.38/2,984.14 = 528.54/x
  3. Step 3: Cross multiply
    1,989.38x = 2,984.14 × 528.54
  4. Step 4: Simplify right side
    1,989.38x = 1,577,226.83
  5. Step 5: Solve for x
    x = 1,577,226.83/1,989.38
  6. Step 6: Final answer
    x = 792.82

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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.