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Finding the Fourth Proportional to 5,157.27, 7,116.93 and 2,919.11

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Solution

The fourth proportional to 5,157.27, 7,116.93 and 2,919.11 is: 4,028.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.27 : 7,116.93 = 2,919.11 : x
  2. Step 2: Convert to fraction form
    5,157.27/7,116.93 = 2,919.11/x
  3. Step 3: Cross multiply
    5,157.27x = 7,116.93 × 2,919.11
  4. Step 4: Simplify right side
    5,157.27x = 20,775,065.95
  5. Step 5: Solve for x
    x = 20,775,065.95/5,157.27
  6. Step 6: Final answer
    x = 4,028.31

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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.