Home / 2,114.30-3,171.45-2,102.15

Finding the Fourth Proportional to 2,114.30, 3,171.45 and 2,102.15

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Solution

The fourth proportional to 2,114.30, 3,171.45 and 2,102.15 is: 3,153.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.30 : 3,171.45 = 2,102.15 : x
  2. Step 2: Convert to fraction form
    2,114.30/3,171.45 = 2,102.15/x
  3. Step 3: Cross multiply
    2,114.30x = 3,171.45 × 2,102.15
  4. Step 4: Simplify right side
    2,114.30x = 6,666,863.62
  5. Step 5: Solve for x
    x = 6,666,863.62/2,114.30
  6. Step 6: Final answer
    x = 3,153.23

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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.