Home / 2,127.54-3,191.31-1,259.22

Finding the Fourth Proportional to 2,127.54, 3,191.31 and 1,259.22

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Solution

The fourth proportional to 2,127.54, 3,191.31 and 1,259.22 is: 1,888.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.54 : 3,191.31 = 1,259.22 : x
  2. Step 2: Convert to fraction form
    2,127.54/3,191.31 = 1,259.22/x
  3. Step 3: Cross multiply
    2,127.54x = 3,191.31 × 1,259.22
  4. Step 4: Simplify right side
    2,127.54x = 4,018,561.38
  5. Step 5: Solve for x
    x = 4,018,561.38/2,127.54
  6. Step 6: Final answer
    x = 1,888.83

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Double scale
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Similar ratio
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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.