Home / 4,479.40-6,716.78-2,138.76

Finding the Fourth Proportional to 4,479.40, 6,716.78 and 2,138.76

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Solution

The fourth proportional to 4,479.40, 6,716.78 and 2,138.76 is: 3,207.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.40 : 6,716.78 = 2,138.76 : x
  2. Step 2: Convert to fraction form
    4,479.40/6,716.78 = 2,138.76/x
  3. Step 3: Cross multiply
    4,479.40x = 6,716.78 × 2,138.76
  4. Step 4: Simplify right side
    4,479.40x = 14,365,580.39
  5. Step 5: Solve for x
    x = 14,365,580.39/4,479.40
  6. Step 6: Final answer
    x = 3,207.03

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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.