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Finding the Fourth Proportional to 2,047.36, 3,071.36 and 660.64

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Solution

The fourth proportional to 2,047.36, 3,071.36 and 660.64 is: 991.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,047.36 : 3,071.36 = 660.64 : x
  2. Step 2: Convert to fraction form
    2,047.36/3,071.36 = 660.64/x
  3. Step 3: Cross multiply
    2,047.36x = 3,071.36 × 660.64
  4. Step 4: Simplify right side
    2,047.36x = 2,029,063.27
  5. Step 5: Solve for x
    x = 2,029,063.27/2,047.36
  6. Step 6: Final answer
    x = 991.06

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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.