Home / 3,821.50-5,732.25-1,513

Finding the Fourth Proportional to 3,821.50, 5,732.25 and 1,513

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Solution

The fourth proportional to 3,821.50, 5,732.25 and 1,513 is: 2,269.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.50 : 5,732.25 = 1,513 : x
  2. Step 2: Convert to fraction form
    3,821.50/5,732.25 = 1,513/x
  3. Step 3: Cross multiply
    3,821.50x = 5,732.25 × 1,513
  4. Step 4: Simplify right side
    3,821.50x = 8,672,894.25
  5. Step 5: Solve for x
    x = 8,672,894.25/3,821.50
  6. Step 6: Final answer
    x = 2,269.50

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Double scale
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Similar ratio
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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.