Home / 2,787.17-3,846.15-1,668.69

Finding the Fourth Proportional to 2,787.17, 3,846.15 and 1,668.69

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Solution

The fourth proportional to 2,787.17, 3,846.15 and 1,668.69 is: 2,302.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.17 : 3,846.15 = 1,668.69 : x
  2. Step 2: Convert to fraction form
    2,787.17/3,846.15 = 1,668.69/x
  3. Step 3: Cross multiply
    2,787.17x = 3,846.15 × 1,668.69
  4. Step 4: Simplify right side
    2,787.17x = 6,418,032.04
  5. Step 5: Solve for x
    x = 6,418,032.04/2,787.17
  6. Step 6: Final answer
    x = 2,302.71

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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.