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Finding the Fourth Proportional to 1,401.92, 2,101.92 and 1,146.56

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Solution

The fourth proportional to 1,401.92, 2,101.92 and 1,146.56 is: 1,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.92 : 2,101.92 = 1,146.56 : x
  2. Step 2: Convert to fraction form
    1,401.92/2,101.92 = 1,146.56/x
  3. Step 3: Cross multiply
    1,401.92x = 2,101.92 × 1,146.56
  4. Step 4: Simplify right side
    1,401.92x = 2,409,977.40
  5. Step 5: Solve for x
    x = 2,409,977.40/1,401.92
  6. Step 6: Final answer
    x = 1,719.05

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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.