Home / 5,172.86-7,139.85-2,936.08

Finding the Fourth Proportional to 5,172.86, 7,139.85 and 2,936.08

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Solution

The fourth proportional to 5,172.86, 7,139.85 and 2,936.08 is: 4,052.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.86 : 7,139.85 = 2,936.08 : x
  2. Step 2: Convert to fraction form
    5,172.86/7,139.85 = 2,936.08/x
  3. Step 3: Cross multiply
    5,172.86x = 7,139.85 × 2,936.08
  4. Step 4: Simplify right side
    5,172.86x = 20,963,168.70
  5. Step 5: Solve for x
    x = 20,963,168.70/5,172.86
  6. Step 6: Final answer
    x = 4,052.53

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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.