Home / 6,121.40-8,447.70-3,468.68

Finding the Fourth Proportional to 6,121.40, 8,447.70 and 3,468.68

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Solution

The fourth proportional to 6,121.40, 8,447.70 and 3,468.68 is: 4,786.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.40 : 8,447.70 = 3,468.68 : x
  2. Step 2: Convert to fraction form
    6,121.40/8,447.70 = 3,468.68/x
  3. Step 3: Cross multiply
    6,121.40x = 8,447.70 × 3,468.68
  4. Step 4: Simplify right side
    6,121.40x = 29,302,368.04
  5. Step 5: Solve for x
    x = 29,302,368.04/6,121.40
  6. Step 6: Final answer
    x = 4,786.87

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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.