Home / 3,378.76-4,659.78-2,199.40

Finding the Fourth Proportional to 3,378.76, 4,659.78 and 2,199.40

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Solution

The fourth proportional to 3,378.76, 4,659.78 and 2,199.40 is: 3,033.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.76 : 4,659.78 = 2,199.40 : x
  2. Step 2: Convert to fraction form
    3,378.76/4,659.78 = 2,199.40/x
  3. Step 3: Cross multiply
    3,378.76x = 4,659.78 × 2,199.40
  4. Step 4: Simplify right side
    3,378.76x = 10,248,720.13
  5. Step 5: Solve for x
    x = 10,248,720.13/3,378.76
  6. Step 6: Final answer
    x = 3,033.28

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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.