Home / 3,808.15-5,256.09-2,315.75

Finding the Fourth Proportional to 3,808.15, 5,256.09 and 2,315.75

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Solution

The fourth proportional to 3,808.15, 5,256.09 and 2,315.75 is: 3,196.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.15 : 5,256.09 = 2,315.75 : x
  2. Step 2: Convert to fraction form
    3,808.15/5,256.09 = 2,315.75/x
  3. Step 3: Cross multiply
    3,808.15x = 5,256.09 × 2,315.75
  4. Step 4: Simplify right side
    3,808.15x = 12,171,790.42
  5. Step 5: Solve for x
    x = 12,171,790.42/3,808.15
  6. Step 6: Final answer
    x = 3,196.25

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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.