Home / 2,129.56-3,190.17-1,202.30

Finding the Fourth Proportional to 2,129.56, 3,190.17 and 1,202.30

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Solution

The fourth proportional to 2,129.56, 3,190.17 and 1,202.30 is: 1,801.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.56 : 3,190.17 = 1,202.30 : x
  2. Step 2: Convert to fraction form
    2,129.56/3,190.17 = 1,202.30/x
  3. Step 3: Cross multiply
    2,129.56x = 3,190.17 × 1,202.30
  4. Step 4: Simplify right side
    2,129.56x = 3,835,541.39
  5. Step 5: Solve for x
    x = 3,835,541.39/2,129.56
  6. Step 6: Final answer
    x = 1,801.10

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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.