Home / 5,164.21-7,126.59-2,806.39

Finding the Fourth Proportional to 5,164.21, 7,126.59 and 2,806.39

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Solution

The fourth proportional to 5,164.21, 7,126.59 and 2,806.39 is: 3,872.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.21 : 7,126.59 = 2,806.39 : x
  2. Step 2: Convert to fraction form
    5,164.21/7,126.59 = 2,806.39/x
  3. Step 3: Cross multiply
    5,164.21x = 7,126.59 × 2,806.39
  4. Step 4: Simplify right side
    5,164.21x = 19,999,990.91
  5. Step 5: Solve for x
    x = 19,999,990.91/5,164.21
  6. Step 6: Final answer
    x = 3,872.81

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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.