Home / 7,860.87-11,783.97-5,396.85

Finding the Fourth Proportional to 7,860.87, 11,783.97 and 5,396.85

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Solution

The fourth proportional to 7,860.87, 11,783.97 and 5,396.85 is: 8,090.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.87 : 11,783.97 = 5,396.85 : x
  2. Step 2: Convert to fraction form
    7,860.87/11,783.97 = 5,396.85/x
  3. Step 3: Cross multiply
    7,860.87x = 11,783.97 × 5,396.85
  4. Step 4: Simplify right side
    7,860.87x = 63,596,318.49
  5. Step 5: Solve for x
    x = 63,596,318.49/7,860.87
  6. Step 6: Final answer
    x = 8,090.24

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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.