Home / 7,680.36-11,518.28-3,296.78

Finding the Fourth Proportional to 7,680.36, 11,518.28 and 3,296.78

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Solution

The fourth proportional to 7,680.36, 11,518.28 and 3,296.78 is: 4,944.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.36 : 11,518.28 = 3,296.78 : x
  2. Step 2: Convert to fraction form
    7,680.36/11,518.28 = 3,296.78/x
  3. Step 3: Cross multiply
    7,680.36x = 11,518.28 × 3,296.78
  4. Step 4: Simplify right side
    7,680.36x = 37,973,235.14
  5. Step 5: Solve for x
    x = 37,973,235.14/7,680.36
  6. Step 6: Final answer
    x = 4,944.20

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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.