Home / 5,217.28-7,825.91-1,321.67

Finding the Fourth Proportional to 5,217.28, 7,825.91 and 1,321.67

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Solution

The fourth proportional to 5,217.28, 7,825.91 and 1,321.67 is: 1,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.28 : 7,825.91 = 1,321.67 : x
  2. Step 2: Convert to fraction form
    5,217.28/7,825.91 = 1,321.67/x
  3. Step 3: Cross multiply
    5,217.28x = 7,825.91 × 1,321.67
  4. Step 4: Simplify right side
    5,217.28x = 10,343,283.43
  5. Step 5: Solve for x
    x = 10,343,283.43/5,217.28
  6. Step 6: Final answer
    x = 1,982.51

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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.