Home / 2,101.14-3,129.30-1,966.14

Finding the Fourth Proportional to 2,101.14, 3,129.30 and 1,966.14

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Solution

The fourth proportional to 2,101.14, 3,129.30 and 1,966.14 is: 2,928.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.14 : 3,129.30 = 1,966.14 : x
  2. Step 2: Convert to fraction form
    2,101.14/3,129.30 = 1,966.14/x
  3. Step 3: Cross multiply
    2,101.14x = 3,129.30 × 1,966.14
  4. Step 4: Simplify right side
    2,101.14x = 6,152,641.90
  5. Step 5: Solve for x
    x = 6,152,641.90/2,101.14
  6. Step 6: Final answer
    x = 2,928.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.