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Finding the Fourth Proportional to 5,213.32, 7,819.98 and 1,753

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Solution

The fourth proportional to 5,213.32, 7,819.98 and 1,753 is: 2,629.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.32 : 7,819.98 = 1,753 : x
  2. Step 2: Convert to fraction form
    5,213.32/7,819.98 = 1,753/x
  3. Step 3: Cross multiply
    5,213.32x = 7,819.98 × 1,753
  4. Step 4: Simplify right side
    5,213.32x = 13,708,424.94
  5. Step 5: Solve for x
    x = 13,708,424.94/5,213.32
  6. Step 6: Final answer
    x = 2,629.50

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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.