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Finding the Fourth Proportional to 2,443.56, 3,372 and 1,395.60

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Solution

The fourth proportional to 2,443.56, 3,372 and 1,395.60 is: 1,925.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,443.56 : 3,372 = 1,395.60 : x
  2. Step 2: Convert to fraction form
    2,443.56/3,372 = 1,395.60/x
  3. Step 3: Cross multiply
    2,443.56x = 3,372 × 1,395.60
  4. Step 4: Simplify right side
    2,443.56x = 4,705,963.20
  5. Step 5: Solve for x
    x = 4,705,963.20/2,443.56
  6. Step 6: Final answer
    x = 1,925.86

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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.