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Finding the Fourth Proportional to 2,101.22, 3,151.76 and 541.19

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Solution

The fourth proportional to 2,101.22, 3,151.76 and 541.19 is: 811.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.22 : 3,151.76 = 541.19 : x
  2. Step 2: Convert to fraction form
    2,101.22/3,151.76 = 541.19/x
  3. Step 3: Cross multiply
    2,101.22x = 3,151.76 × 541.19
  4. Step 4: Simplify right side
    2,101.22x = 1,705,700.99
  5. Step 5: Solve for x
    x = 1,705,700.99/2,101.22
  6. Step 6: Final answer
    x = 811.77

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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.