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Finding the Fourth Proportional to 2,372.40, 3,558.60 and 641.02

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Solution

The fourth proportional to 2,372.40, 3,558.60 and 641.02 is: 961.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,372.40 : 3,558.60 = 641.02 : x
  2. Step 2: Convert to fraction form
    2,372.40/3,558.60 = 641.02/x
  3. Step 3: Cross multiply
    2,372.40x = 3,558.60 × 641.02
  4. Step 4: Simplify right side
    2,372.40x = 2,281,133.77
  5. Step 5: Solve for x
    x = 2,281,133.77/2,372.40
  6. Step 6: Final answer
    x = 961.53

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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.