Home / 2,787.19-3,846.19-1,668.74

Finding the Fourth Proportional to 2,787.19, 3,846.19 and 1,668.74

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Solution

The fourth proportional to 2,787.19, 3,846.19 and 1,668.74 is: 2,302.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.19 : 3,846.19 = 1,668.74 : x
  2. Step 2: Convert to fraction form
    2,787.19/3,846.19 = 1,668.74/x
  3. Step 3: Cross multiply
    2,787.19x = 3,846.19 × 1,668.74
  4. Step 4: Simplify right side
    2,787.19x = 6,418,291.10
  5. Step 5: Solve for x
    x = 6,418,291.10/2,787.19
  6. Step 6: Final answer
    x = 2,302.78

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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.