Home / 1,939.12-2,908.80-552.58

Finding the Fourth Proportional to 1,939.12, 2,908.80 and 552.58

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Solution

The fourth proportional to 1,939.12, 2,908.80 and 552.58 is: 828.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.12 : 2,908.80 = 552.58 : x
  2. Step 2: Convert to fraction form
    1,939.12/2,908.80 = 552.58/x
  3. Step 3: Cross multiply
    1,939.12x = 2,908.80 × 552.58
  4. Step 4: Simplify right side
    1,939.12x = 1,607,337.43
  5. Step 5: Solve for x
    x = 1,607,337.43/1,939.12
  6. Step 6: Final answer
    x = 828.90

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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.