Home / 1,517.75-2,094.87-928.79

Finding the Fourth Proportional to 1,517.75, 2,094.87 and 928.79

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Solution

The fourth proportional to 1,517.75, 2,094.87 and 928.79 is: 1,281.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.75 : 2,094.87 = 928.79 : x
  2. Step 2: Convert to fraction form
    1,517.75/2,094.87 = 928.79/x
  3. Step 3: Cross multiply
    1,517.75x = 2,094.87 × 928.79
  4. Step 4: Simplify right side
    1,517.75x = 1,945,683.83
  5. Step 5: Solve for x
    x = 1,945,683.83/1,517.75
  6. Step 6: Final answer
    x = 1,281.95

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1.5x scale

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.