Home / 7,799.20-11,699.40-2,605.08

Finding the Fourth Proportional to 7,799.20, 11,699.40 and 2,605.08

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Solution

The fourth proportional to 7,799.20, 11,699.40 and 2,605.08 is: 3,907.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,799.20 : 11,699.40 = 2,605.08 : x
  2. Step 2: Convert to fraction form
    7,799.20/11,699.40 = 2,605.08/x
  3. Step 3: Cross multiply
    7,799.20x = 11,699.40 × 2,605.08
  4. Step 4: Simplify right side
    7,799.20x = 30,477,872.95
  5. Step 5: Solve for x
    x = 30,477,872.95/7,799.20
  6. Step 6: Final answer
    x = 3,907.82

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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.