Home / 1,520.25-2,276.10-806.25

Finding the Fourth Proportional to 1,520.25, 2,276.10 and 806.25

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Solution

The fourth proportional to 1,520.25, 2,276.10 and 806.25 is: 1,207.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.25 : 2,276.10 = 806.25 : x
  2. Step 2: Convert to fraction form
    1,520.25/2,276.10 = 806.25/x
  3. Step 3: Cross multiply
    1,520.25x = 2,276.10 × 806.25
  4. Step 4: Simplify right side
    1,520.25x = 1,835,105.63
  5. Step 5: Solve for x
    x = 1,835,105.63/1,520.25
  6. Step 6: Final answer
    x = 1,207.11

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1.5x scale

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.