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Finding the Fourth Proportional to 5,164.53, 7,127.07 and 2,806.65

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Solution

The fourth proportional to 5,164.53, 7,127.07 and 2,806.65 is: 3,873.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.53 : 7,127.07 = 2,806.65 : x
  2. Step 2: Convert to fraction form
    5,164.53/7,127.07 = 2,806.65/x
  3. Step 3: Cross multiply
    5,164.53x = 7,127.07 × 2,806.65
  4. Step 4: Simplify right side
    5,164.53x = 20,003,191.02
  5. Step 5: Solve for x
    x = 20,003,191.02/5,164.53
  6. Step 6: Final answer
    x = 3,873.19

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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.