Home / 2,859.12-3,944.70-1,977.12

Finding the Fourth Proportional to 2,859.12, 3,944.70 and 1,977.12

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Solution

The fourth proportional to 2,859.12, 3,944.70 and 1,977.12 is: 2,727.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.12 : 3,944.70 = 1,977.12 : x
  2. Step 2: Convert to fraction form
    2,859.12/3,944.70 = 1,977.12/x
  3. Step 3: Cross multiply
    2,859.12x = 3,944.70 × 1,977.12
  4. Step 4: Simplify right side
    2,859.12x = 7,799,145.26
  5. Step 5: Solve for x
    x = 7,799,145.26/2,859.12
  6. Step 6: Final answer
    x = 2,727.81

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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.