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Finding the Fourth Proportional to 2,970.97, 4,099.86 and 1,644.64

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Solution

The fourth proportional to 2,970.97, 4,099.86 and 1,644.64 is: 2,269.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.97 : 4,099.86 = 1,644.64 : x
  2. Step 2: Convert to fraction form
    2,970.97/4,099.86 = 1,644.64/x
  3. Step 3: Cross multiply
    2,970.97x = 4,099.86 × 1,644.64
  4. Step 4: Simplify right side
    2,970.97x = 6,742,783.50
  5. Step 5: Solve for x
    x = 6,742,783.50/2,970.97
  6. Step 6: Final answer
    x = 2,269.56

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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.