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Finding the Fourth Proportional to 7,799.80, 10,763.04 and 4,397.12

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Solution

The fourth proportional to 7,799.80, 10,763.04 and 4,397.12 is: 6,067.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,799.80 : 10,763.04 = 4,397.12 : x
  2. Step 2: Convert to fraction form
    7,799.80/10,763.04 = 4,397.12/x
  3. Step 3: Cross multiply
    7,799.80x = 10,763.04 × 4,397.12
  4. Step 4: Simplify right side
    7,799.80x = 47,326,378.44
  5. Step 5: Solve for x
    x = 47,326,378.44/7,799.80
  6. Step 6: Final answer
    x = 6,067.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.