Home / 2,104.14-3,171.40-1,985.06

Finding the Fourth Proportional to 2,104.14, 3,171.40 and 1,985.06

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Solution

The fourth proportional to 2,104.14, 3,171.40 and 1,985.06 is: 2,991.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.14 : 3,171.40 = 1,985.06 : x
  2. Step 2: Convert to fraction form
    2,104.14/3,171.40 = 1,985.06/x
  3. Step 3: Cross multiply
    2,104.14x = 3,171.40 × 1,985.06
  4. Step 4: Simplify right side
    2,104.14x = 6,295,419.28
  5. Step 5: Solve for x
    x = 6,295,419.28/2,104.14
  6. Step 6: Final answer
    x = 2,991.92

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.