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Finding the Fourth Proportional to 5,285.25, 7,294.25 and 3,189.38

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Solution

The fourth proportional to 5,285.25, 7,294.25 and 3,189.38 is: 4,401.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.25 : 7,294.25 = 3,189.38 : x
  2. Step 2: Convert to fraction form
    5,285.25/7,294.25 = 3,189.38/x
  3. Step 3: Cross multiply
    5,285.25x = 7,294.25 × 3,189.38
  4. Step 4: Simplify right side
    5,285.25x = 23,264,106.57
  5. Step 5: Solve for x
    x = 23,264,106.57/5,285.25
  6. Step 6: Final answer
    x = 4,401.70

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.