Home / 2,417.20-3,322.78-2,179.60

Finding the Fourth Proportional to 2,417.20, 3,322.78 and 2,179.60

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Solution

The fourth proportional to 2,417.20, 3,322.78 and 2,179.60 is: 2,996.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,417.20 : 3,322.78 = 2,179.60 : x
  2. Step 2: Convert to fraction form
    2,417.20/3,322.78 = 2,179.60/x
  3. Step 3: Cross multiply
    2,417.20x = 3,322.78 × 2,179.60
  4. Step 4: Simplify right side
    2,417.20x = 7,242,331.29
  5. Step 5: Solve for x
    x = 7,242,331.29/2,417.20
  6. Step 6: Final answer
    x = 2,996.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.