Home / 1,517.72-2,094.62-928.65

Finding the Fourth Proportional to 1,517.72, 2,094.62 and 928.65

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Solution

The fourth proportional to 1,517.72, 2,094.62 and 928.65 is: 1,281.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.72 : 2,094.62 = 928.65 : x
  2. Step 2: Convert to fraction form
    1,517.72/2,094.62 = 928.65/x
  3. Step 3: Cross multiply
    1,517.72x = 2,094.62 × 928.65
  4. Step 4: Simplify right side
    1,517.72x = 1,945,164.22
  5. Step 5: Solve for x
    x = 1,945,164.22/1,517.72
  6. Step 6: Final answer
    x = 1,281.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.