Home / 3,439.40-5,168.16-1,880.40

Finding the Fourth Proportional to 3,439.40, 5,168.16 and 1,880.40

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Solution

The fourth proportional to 3,439.40, 5,168.16 and 1,880.40 is: 2,825.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.40 : 5,168.16 = 1,880.40 : x
  2. Step 2: Convert to fraction form
    3,439.40/5,168.16 = 1,880.40/x
  3. Step 3: Cross multiply
    3,439.40x = 5,168.16 × 1,880.40
  4. Step 4: Simplify right side
    3,439.40x = 9,718,208.06
  5. Step 5: Solve for x
    x = 9,718,208.06/3,439.40
  6. Step 6: Final answer
    x = 2,825.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.