Home / 3,787.11-5,220.52-2,989.06

Finding the Fourth Proportional to 3,787.11, 5,220.52 and 2,989.06

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Solution

The fourth proportional to 3,787.11, 5,220.52 and 2,989.06 is: 4,120.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.11 : 5,220.52 = 2,989.06 : x
  2. Step 2: Convert to fraction form
    3,787.11/5,220.52 = 2,989.06/x
  3. Step 3: Cross multiply
    3,787.11x = 5,220.52 × 2,989.06
  4. Step 4: Simplify right side
    3,787.11x = 15,604,447.51
  5. Step 5: Solve for x
    x = 15,604,447.51/3,787.11
  6. Step 6: Final answer
    x = 4,120.41

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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.