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Finding the Fourth Proportional to 1,762.12, 2,431.85 and 1,016.11

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Solution

The fourth proportional to 1,762.12, 2,431.85 and 1,016.11 is: 1,402.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762.12 : 2,431.85 = 1,016.11 : x
  2. Step 2: Convert to fraction form
    1,762.12/2,431.85 = 1,016.11/x
  3. Step 3: Cross multiply
    1,762.12x = 2,431.85 × 1,016.11
  4. Step 4: Simplify right side
    1,762.12x = 2,471,022.02
  5. Step 5: Solve for x
    x = 2,471,022.02/1,762.12
  6. Step 6: Final answer
    x = 1,402.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.