Home / 1,528.38-2,290.41-834.21

Finding the Fourth Proportional to 1,528.38, 2,290.41 and 834.21

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Solution

The fourth proportional to 1,528.38, 2,290.41 and 834.21 is: 1,250.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.38 : 2,290.41 = 834.21 : x
  2. Step 2: Convert to fraction form
    1,528.38/2,290.41 = 834.21/x
  3. Step 3: Cross multiply
    1,528.38x = 2,290.41 × 834.21
  4. Step 4: Simplify right side
    1,528.38x = 1,910,682.93
  5. Step 5: Solve for x
    x = 1,910,682.93/1,528.38
  6. Step 6: Final answer
    x = 1,250.14

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Double scale
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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.