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Finding the Third Proportional to 1,210.57 and 1,929.13

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Solution

The third proportional to 1,210.57 and 1,929.13 is: 3,074.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.57 : 1,929.13 = 1,929.13 : x
  2. Step 2: Convert to fraction form
    1,210.57/1,929.13 = 1,929.13/x
  3. Step 3: Cross multiply
    1,210.57x = 1,929.13 × 1,929.13
  4. Step 4: Simplify right side
    1,210.57x = 3,721,538.34
  5. Step 5: Solve for x
    x = 3,721,538.34/1,210.57
  6. Step 6: Final answer
    x = 3,074.20

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.