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Finding the Fourth Proportional to 8,740.65, 12,062.79 and 4,965

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Solution

The fourth proportional to 8,740.65, 12,062.79 and 4,965 is: 6,852.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,740.65 : 12,062.79 = 4,965 : x
  2. Step 2: Convert to fraction form
    8,740.65/12,062.79 = 4,965/x
  3. Step 3: Cross multiply
    8,740.65x = 12,062.79 × 4,965
  4. Step 4: Simplify right side
    8,740.65x = 59,891,752.35
  5. Step 5: Solve for x
    x = 59,891,752.35/8,740.65
  6. Step 6: Final answer
    x = 6,852.09

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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.