Home / 2,799.45-3,860.55-2,135.15

Finding the Fourth Proportional to 2,799.45, 3,860.55 and 2,135.15

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Solution

The fourth proportional to 2,799.45, 3,860.55 and 2,135.15 is: 2,944.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.45 : 3,860.55 = 2,135.15 : x
  2. Step 2: Convert to fraction form
    2,799.45/3,860.55 = 2,135.15/x
  3. Step 3: Cross multiply
    2,799.45x = 3,860.55 × 2,135.15
  4. Step 4: Simplify right side
    2,799.45x = 8,242,834.03
  5. Step 5: Solve for x
    x = 8,242,834.03/2,799.45
  6. Step 6: Final answer
    x = 2,944.45

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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.