Home / 3,994.08-5,512.35-2,878.71

Finding the Fourth Proportional to 3,994.08, 5,512.35 and 2,878.71

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Solution

The fourth proportional to 3,994.08, 5,512.35 and 2,878.71 is: 3,973.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.08 : 5,512.35 = 2,878.71 : x
  2. Step 2: Convert to fraction form
    3,994.08/5,512.35 = 2,878.71/x
  3. Step 3: Cross multiply
    3,994.08x = 5,512.35 × 2,878.71
  4. Step 4: Simplify right side
    3,994.08x = 15,868,447.19
  5. Step 5: Solve for x
    x = 15,868,447.19/3,994.08
  6. Step 6: Final answer
    x = 3,973.00

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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.