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Finding the Fourth Proportional to 5,157.74, 7,735.17 and 1,647.74

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Solution

The fourth proportional to 5,157.74, 7,735.17 and 1,647.74 is: 2,471.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.74 : 7,735.17 = 1,647.74 : x
  2. Step 2: Convert to fraction form
    5,157.74/7,735.17 = 1,647.74/x
  3. Step 3: Cross multiply
    5,157.74x = 7,735.17 × 1,647.74
  4. Step 4: Simplify right side
    5,157.74x = 12,745,549.02
  5. Step 5: Solve for x
    x = 12,745,549.02/5,157.74
  6. Step 6: Final answer
    x = 2,471.15

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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.