Home / 5,127.75-7,074.68-3,137.31

Finding the Fourth Proportional to 5,127.75, 7,074.68 and 3,137.31

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Solution

The fourth proportional to 5,127.75, 7,074.68 and 3,137.31 is: 4,328.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.75 : 7,074.68 = 3,137.31 : x
  2. Step 2: Convert to fraction form
    5,127.75/7,074.68 = 3,137.31/x
  3. Step 3: Cross multiply
    5,127.75x = 7,074.68 × 3,137.31
  4. Step 4: Simplify right side
    5,127.75x = 22,195,448.62
  5. Step 5: Solve for x
    x = 22,195,448.62/5,127.75
  6. Step 6: Final answer
    x = 4,328.50

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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.