Home / 3,140.85-4,334.22-1,724.52

Finding the Fourth Proportional to 3,140.85, 4,334.22 and 1,724.52

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Solution

The fourth proportional to 3,140.85, 4,334.22 and 1,724.52 is: 2,379.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.85 : 4,334.22 = 1,724.52 : x
  2. Step 2: Convert to fraction form
    3,140.85/4,334.22 = 1,724.52/x
  3. Step 3: Cross multiply
    3,140.85x = 4,334.22 × 1,724.52
  4. Step 4: Simplify right side
    3,140.85x = 7,474,449.07
  5. Step 5: Solve for x
    x = 7,474,449.07/3,140.85
  6. Step 6: Final answer
    x = 2,379.75

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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.