Home / 3,860.80-5,327.89-2,092.40

Finding the Fourth Proportional to 3,860.80, 5,327.89 and 2,092.40

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Solution

The fourth proportional to 3,860.80, 5,327.89 and 2,092.40 is: 2,887.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.80 : 5,327.89 = 2,092.40 : x
  2. Step 2: Convert to fraction form
    3,860.80/5,327.89 = 2,092.40/x
  3. Step 3: Cross multiply
    3,860.80x = 5,327.89 × 2,092.40
  4. Step 4: Simplify right side
    3,860.80x = 11,148,065.15
  5. Step 5: Solve for x
    x = 11,148,065.15/3,860.80
  6. Step 6: Final answer
    x = 2,887.50

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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.