Home / 2,799.47-3,863.12-1,679.84

Finding the Fourth Proportional to 2,799.47, 3,863.12 and 1,679.84

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Solution

The fourth proportional to 2,799.47, 3,863.12 and 1,679.84 is: 2,318.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.47 : 3,863.12 = 1,679.84 : x
  2. Step 2: Convert to fraction form
    2,799.47/3,863.12 = 1,679.84/x
  3. Step 3: Cross multiply
    2,799.47x = 3,863.12 × 1,679.84
  4. Step 4: Simplify right side
    2,799.47x = 6,489,395.79
  5. Step 5: Solve for x
    x = 6,489,395.79/2,799.47
  6. Step 6: Final answer
    x = 2,318.08

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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.