Home / 2,787.25-3,846.27-1,668.81

Finding the Fourth Proportional to 2,787.25, 3,846.27 and 1,668.81

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Solution

The fourth proportional to 2,787.25, 3,846.27 and 1,668.81 is: 2,302.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.25 : 3,846.27 = 1,668.81 : x
  2. Step 2: Convert to fraction form
    2,787.25/3,846.27 = 1,668.81/x
  3. Step 3: Cross multiply
    2,787.25x = 3,846.27 × 1,668.81
  4. Step 4: Simplify right side
    2,787.25x = 6,418,693.84
  5. Step 5: Solve for x
    x = 6,418,693.84/2,787.25
  6. Step 6: Final answer
    x = 2,302.88

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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.