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Finding the Fourth Proportional to 7,860.80, 10,847.79 and 4,275.82

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Solution

The fourth proportional to 7,860.80, 10,847.79 and 4,275.82 is: 5,900.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.80 : 10,847.79 = 4,275.82 : x
  2. Step 2: Convert to fraction form
    7,860.80/10,847.79 = 4,275.82/x
  3. Step 3: Cross multiply
    7,860.80x = 10,847.79 × 4,275.82
  4. Step 4: Simplify right side
    7,860.80x = 46,383,170.32
  5. Step 5: Solve for x
    x = 46,383,170.32/7,860.80
  6. Step 6: Final answer
    x = 5,900.56

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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.