Home / 7,770.20-11,656.04-2,838.65

Finding the Fourth Proportional to 7,770.20, 11,656.04 and 2,838.65

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Solution

The fourth proportional to 7,770.20, 11,656.04 and 2,838.65 is: 4,258.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770.20 : 11,656.04 = 2,838.65 : x
  2. Step 2: Convert to fraction form
    7,770.20/11,656.04 = 2,838.65/x
  3. Step 3: Cross multiply
    7,770.20x = 11,656.04 × 2,838.65
  4. Step 4: Simplify right side
    7,770.20x = 33,087,345.47
  5. Step 5: Solve for x
    x = 33,087,345.47/7,770.20
  6. Step 6: Final answer
    x = 4,258.24

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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.