Home / 3,322.20-4,987.80-2,159.40

Finding the Fourth Proportional to 3,322.20, 4,987.80 and 2,159.40

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Solution

The fourth proportional to 3,322.20, 4,987.80 and 2,159.40 is: 3,242.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,322.20 : 4,987.80 = 2,159.40 : x
  2. Step 2: Convert to fraction form
    3,322.20/4,987.80 = 2,159.40/x
  3. Step 3: Cross multiply
    3,322.20x = 4,987.80 × 2,159.40
  4. Step 4: Simplify right side
    3,322.20x = 10,770,655.32
  5. Step 5: Solve for x
    x = 10,770,655.32/3,322.20
  6. Step 6: Final answer
    x = 3,242.02

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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.