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Finding the Third Proportional to 4,985.51 and 7,718.65

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Solution

The third proportional to 4,985.51 and 7,718.65 is: 11,950.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.51 : 7,718.65 = 7,718.65 : x
  2. Step 2: Convert to fraction form
    4,985.51/7,718.65 = 7,718.65/x
  3. Step 3: Cross multiply
    4,985.51x = 7,718.65 × 7,718.65
  4. Step 4: Simplify right side
    4,985.51x = 59,577,533.70
  5. Step 5: Solve for x
    x = 59,577,533.70/4,985.51
  6. Step 6: Final answer
    x = 11,950.14

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.