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Finding the Fourth Proportional to 7,799.34, 11,700.72 and 2,605.08

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Solution

The fourth proportional to 7,799.34, 11,700.72 and 2,605.08 is: 3,908.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,799.34 : 11,700.72 = 2,605.08 : x
  2. Step 2: Convert to fraction form
    7,799.34/11,700.72 = 2,605.08/x
  3. Step 3: Cross multiply
    7,799.34x = 11,700.72 × 2,605.08
  4. Step 4: Simplify right side
    7,799.34x = 30,481,311.66
  5. Step 5: Solve for x
    x = 30,481,311.66/7,799.34
  6. Step 6: Final answer
    x = 3,908.19

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1.5x scale

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.