Home / 1,517.90-2,094.78-928.25

Finding the Fourth Proportional to 1,517.90, 2,094.78 and 928.25

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Solution

The fourth proportional to 1,517.90, 2,094.78 and 928.25 is: 1,281.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.90 : 2,094.78 = 928.25 : x
  2. Step 2: Convert to fraction form
    1,517.90/2,094.78 = 928.25/x
  3. Step 3: Cross multiply
    1,517.90x = 2,094.78 × 928.25
  4. Step 4: Simplify right side
    1,517.90x = 1,944,479.54
  5. Step 5: Solve for x
    x = 1,944,479.54/1,517.90
  6. Step 6: Final answer
    x = 1,281.03

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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.