Home / 1,520.60-2,281.55-741.29

Finding the Fourth Proportional to 1,520.60, 2,281.55 and 741.29

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Solution

The fourth proportional to 1,520.60, 2,281.55 and 741.29 is: 1,112.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.60 : 2,281.55 = 741.29 : x
  2. Step 2: Convert to fraction form
    1,520.60/2,281.55 = 741.29/x
  3. Step 3: Cross multiply
    1,520.60x = 2,281.55 × 741.29
  4. Step 4: Simplify right side
    1,520.60x = 1,691,275.09
  5. Step 5: Solve for x
    x = 1,691,275.09/1,520.60
  6. Step 6: Final answer
    x = 1,112.25

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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.