Home / 3,189.64-4,401.68-1,792.40

Finding the Fourth Proportional to 3,189.64, 4,401.68 and 1,792.40

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Solution

The fourth proportional to 3,189.64, 4,401.68 and 1,792.40 is: 2,473.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.64 : 4,401.68 = 1,792.40 : x
  2. Step 2: Convert to fraction form
    3,189.64/4,401.68 = 1,792.40/x
  3. Step 3: Cross multiply
    3,189.64x = 4,401.68 × 1,792.40
  4. Step 4: Simplify right side
    3,189.64x = 7,889,571.23
  5. Step 5: Solve for x
    x = 7,889,571.23/3,189.64
  6. Step 6: Final answer
    x = 2,473.50

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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.