Home / 3,991.84-5,513.04-2,671.12

Finding the Fourth Proportional to 3,991.84, 5,513.04 and 2,671.12

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Solution

The fourth proportional to 3,991.84, 5,513.04 and 2,671.12 is: 3,689.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.84 : 5,513.04 = 2,671.12 : x
  2. Step 2: Convert to fraction form
    3,991.84/5,513.04 = 2,671.12/x
  3. Step 3: Cross multiply
    3,991.84x = 5,513.04 × 2,671.12
  4. Step 4: Simplify right side
    3,991.84x = 14,725,991.40
  5. Step 5: Solve for x
    x = 14,725,991.40/3,991.84
  6. Step 6: Final answer
    x = 3,689.02

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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.