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Finding the Fourth Proportional to 2,667.60, 4,005.72 and 1,695.60

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Solution

The fourth proportional to 2,667.60, 4,005.72 and 1,695.60 is: 2,546.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,667.60 : 4,005.72 = 1,695.60 : x
  2. Step 2: Convert to fraction form
    2,667.60/4,005.72 = 1,695.60/x
  3. Step 3: Cross multiply
    2,667.60x = 4,005.72 × 1,695.60
  4. Step 4: Simplify right side
    2,667.60x = 6,792,098.83
  5. Step 5: Solve for x
    x = 6,792,098.83/2,667.60
  6. Step 6: Final answer
    x = 2,546.15

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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.