Home / 2,171.36-2,996.47-1,227.20

Finding the Fourth Proportional to 2,171.36, 2,996.47 and 1,227.20

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Solution

The fourth proportional to 2,171.36, 2,996.47 and 1,227.20 is: 1,693.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.36 : 2,996.47 = 1,227.20 : x
  2. Step 2: Convert to fraction form
    2,171.36/2,996.47 = 1,227.20/x
  3. Step 3: Cross multiply
    2,171.36x = 2,996.47 × 1,227.20
  4. Step 4: Simplify right side
    2,171.36x = 3,677,267.98
  5. Step 5: Solve for x
    x = 3,677,267.98/2,171.36
  6. Step 6: Final answer
    x = 1,693.53

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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.