Home / 5,176.71-7,138.89-3,479.05

Finding the Fourth Proportional to 5,176.71, 7,138.89 and 3,479.05

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Solution

The fourth proportional to 5,176.71, 7,138.89 and 3,479.05 is: 4,797.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.71 : 7,138.89 = 3,479.05 : x
  2. Step 2: Convert to fraction form
    5,176.71/7,138.89 = 3,479.05/x
  3. Step 3: Cross multiply
    5,176.71x = 7,138.89 × 3,479.05
  4. Step 4: Simplify right side
    5,176.71x = 24,836,555.25
  5. Step 5: Solve for x
    x = 24,836,555.25/5,176.71
  6. Step 6: Final answer
    x = 4,797.75

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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.