Home / 3,908.07-5,387.52-2,787.06

Finding the Fourth Proportional to 3,908.07, 5,387.52 and 2,787.06

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Solution

The fourth proportional to 3,908.07, 5,387.52 and 2,787.06 is: 3,842.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.07 : 5,387.52 = 2,787.06 : x
  2. Step 2: Convert to fraction form
    3,908.07/5,387.52 = 2,787.06/x
  3. Step 3: Cross multiply
    3,908.07x = 5,387.52 × 2,787.06
  4. Step 4: Simplify right side
    3,908.07x = 15,015,341.49
  5. Step 5: Solve for x
    x = 15,015,341.49/3,908.07
  6. Step 6: Final answer
    x = 3,842.14

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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.