Home / 3,269.10-4,921.44-2,978.47

Finding the Fourth Proportional to 3,269.10, 4,921.44 and 2,978.47

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Solution

The fourth proportional to 3,269.10, 4,921.44 and 2,978.47 is: 4,483.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,269.10 : 4,921.44 = 2,978.47 : x
  2. Step 2: Convert to fraction form
    3,269.10/4,921.44 = 2,978.47/x
  3. Step 3: Cross multiply
    3,269.10x = 4,921.44 × 2,978.47
  4. Step 4: Simplify right side
    3,269.10x = 14,658,361.40
  5. Step 5: Solve for x
    x = 14,658,361.40/3,269.10
  6. Step 6: Final answer
    x = 4,483.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.