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Finding the Fourth Proportional to 5,213.92, 7,820.88 and 1,751.20

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Solution

The fourth proportional to 5,213.92, 7,820.88 and 1,751.20 is: 2,626.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.92 : 7,820.88 = 1,751.20 : x
  2. Step 2: Convert to fraction form
    5,213.92/7,820.88 = 1,751.20/x
  3. Step 3: Cross multiply
    5,213.92x = 7,820.88 × 1,751.20
  4. Step 4: Simplify right side
    5,213.92x = 13,695,925.06
  5. Step 5: Solve for x
    x = 13,695,925.06/5,213.92
  6. Step 6: Final answer
    x = 2,626.80

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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.