Home / 2,181.09-3,272.55-947.88

Finding the Fourth Proportional to 2,181.09, 3,272.55 and 947.88

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Solution

The fourth proportional to 2,181.09, 3,272.55 and 947.88 is: 1,422.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.09 : 3,272.55 = 947.88 : x
  2. Step 2: Convert to fraction form
    2,181.09/3,272.55 = 947.88/x
  3. Step 3: Cross multiply
    2,181.09x = 3,272.55 × 947.88
  4. Step 4: Simplify right side
    2,181.09x = 3,101,984.69
  5. Step 5: Solve for x
    x = 3,101,984.69/2,181.09
  6. Step 6: Final answer
    x = 1,422.22

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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.