Home / 3,106.08-4,659.35-1,257.21

Finding the Fourth Proportional to 3,106.08, 4,659.35 and 1,257.21

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Solution

The fourth proportional to 3,106.08, 4,659.35 and 1,257.21 is: 1,885.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.08 : 4,659.35 = 1,257.21 : x
  2. Step 2: Convert to fraction form
    3,106.08/4,659.35 = 1,257.21/x
  3. Step 3: Cross multiply
    3,106.08x = 4,659.35 × 1,257.21
  4. Step 4: Simplify right side
    3,106.08x = 5,857,775.13
  5. Step 5: Solve for x
    x = 5,857,775.13/3,106.08
  6. Step 6: Final answer
    x = 1,885.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.