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Finding the Fourth Proportional to 6,988.68, 10,482.68 and 2,605.79

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Solution

The fourth proportional to 6,988.68, 10,482.68 and 2,605.79 is: 3,908.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988.68 : 10,482.68 = 2,605.79 : x
  2. Step 2: Convert to fraction form
    6,988.68/10,482.68 = 2,605.79/x
  3. Step 3: Cross multiply
    6,988.68x = 10,482.68 × 2,605.79
  4. Step 4: Simplify right side
    6,988.68x = 27,315,675.89
  5. Step 5: Solve for x
    x = 27,315,675.89/6,988.68
  6. Step 6: Final answer
    x = 3,908.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.