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Finding the Third Proportional to 7,718.63 and 8,812.13

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Solution

The third proportional to 7,718.63 and 8,812.13 is: 10,060.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.63 : 8,812.13 = 8,812.13 : x
  2. Step 2: Convert to fraction form
    7,718.63/8,812.13 = 8,812.13/x
  3. Step 3: Cross multiply
    7,718.63x = 8,812.13 × 8,812.13
  4. Step 4: Simplify right side
    7,718.63x = 77,653,547.02
  5. Step 5: Solve for x
    x = 77,653,547.02/7,718.63
  6. Step 6: Final answer
    x = 10,060.54

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.