Home / 3,140.62-4,334.12-1,724.36

Finding the Fourth Proportional to 3,140.62, 4,334.12 and 1,724.36

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Solution

The fourth proportional to 3,140.62, 4,334.12 and 1,724.36 is: 2,379.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.62 : 4,334.12 = 1,724.36 : x
  2. Step 2: Convert to fraction form
    3,140.62/4,334.12 = 1,724.36/x
  3. Step 3: Cross multiply
    3,140.62x = 4,334.12 × 1,724.36
  4. Step 4: Simplify right side
    3,140.62x = 7,473,574.54
  5. Step 5: Solve for x
    x = 7,473,574.54/3,140.62
  6. Step 6: Final answer
    x = 2,379.65

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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.