Home / 5,138.09-7,708.35-2,214.80

Finding the Fourth Proportional to 5,138.09, 7,708.35 and 2,214.80

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Solution

The fourth proportional to 5,138.09, 7,708.35 and 2,214.80 is: 3,322.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.09 : 7,708.35 = 2,214.80 : x
  2. Step 2: Convert to fraction form
    5,138.09/7,708.35 = 2,214.80/x
  3. Step 3: Cross multiply
    5,138.09x = 7,708.35 × 2,214.80
  4. Step 4: Simplify right side
    5,138.09x = 17,072,453.58
  5. Step 5: Solve for x
    x = 17,072,453.58/5,138.09
  6. Step 6: Final answer
    x = 3,322.72

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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.