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Finding the Fourth Proportional to 2,674.72, 4,005.60 and 1,635.40

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Solution

The fourth proportional to 2,674.72, 4,005.60 and 1,635.40 is: 2,449.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,674.72 : 4,005.60 = 1,635.40 : x
  2. Step 2: Convert to fraction form
    2,674.72/4,005.60 = 1,635.40/x
  3. Step 3: Cross multiply
    2,674.72x = 4,005.60 × 1,635.40
  4. Step 4: Simplify right side
    2,674.72x = 6,550,758.24
  5. Step 5: Solve for x
    x = 6,550,758.24/2,674.72
  6. Step 6: Final answer
    x = 2,449.14

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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.