Home / 3,886.56-5,364.09-2,315.58

Finding the Fourth Proportional to 3,886.56, 5,364.09 and 2,315.58

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Solution

The fourth proportional to 3,886.56, 5,364.09 and 2,315.58 is: 3,195.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.56 : 5,364.09 = 2,315.58 : x
  2. Step 2: Convert to fraction form
    3,886.56/5,364.09 = 2,315.58/x
  3. Step 3: Cross multiply
    3,886.56x = 5,364.09 × 2,315.58
  4. Step 4: Simplify right side
    3,886.56x = 12,420,979.52
  5. Step 5: Solve for x
    x = 12,420,979.52/3,886.56
  6. Step 6: Final answer
    x = 3,195.88

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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.