Home / 2,171.08-3,254.29-939.07

Finding the Fourth Proportional to 2,171.08, 3,254.29 and 939.07

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Solution

The fourth proportional to 2,171.08, 3,254.29 and 939.07 is: 1,407.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.08 : 3,254.29 = 939.07 : x
  2. Step 2: Convert to fraction form
    2,171.08/3,254.29 = 939.07/x
  3. Step 3: Cross multiply
    2,171.08x = 3,254.29 × 939.07
  4. Step 4: Simplify right side
    2,171.08x = 3,055,985.14
  5. Step 5: Solve for x
    x = 3,055,985.14/2,171.08
  6. Step 6: Final answer
    x = 1,407.59

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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.