Home / 5,172.74-7,138.90-3,048.92

Finding the Fourth Proportional to 5,172.74, 7,138.90 and 3,048.92

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Solution

The fourth proportional to 5,172.74, 7,138.90 and 3,048.92 is: 4,207.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.74 : 7,138.90 = 3,048.92 : x
  2. Step 2: Convert to fraction form
    5,172.74/7,138.90 = 3,048.92/x
  3. Step 3: Cross multiply
    5,172.74x = 7,138.90 × 3,048.92
  4. Step 4: Simplify right side
    5,172.74x = 21,765,970.03
  5. Step 5: Solve for x
    x = 21,765,970.03/5,172.74
  6. Step 6: Final answer
    x = 4,207.83

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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.