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Finding the Third Proportional to 1,157 and 2,530

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Solution

The third proportional to 1,157 and 2,530 is: 5,532.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157 : 2,530 = 2,530 : x
  2. Step 2: Convert to fraction form
    1,157/2,530 = 2,530/x
  3. Step 3: Cross multiply
    1,157x = 2,530 × 2,530
  4. Step 4: Simplify right side
    1,157x = 6,400,900
  5. Step 5: Solve for x
    x = 6,400,900/1,157
  6. Step 6: Final answer
    x = 5,532.32

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.