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Finding the Fourth Proportional to 8,920.38, 13,372.62 and 4,237.50

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Solution

The fourth proportional to 8,920.38, 13,372.62 and 4,237.50 is: 6,352.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.38 : 13,372.62 = 4,237.50 : x
  2. Step 2: Convert to fraction form
    8,920.38/13,372.62 = 4,237.50/x
  3. Step 3: Cross multiply
    8,920.38x = 13,372.62 × 4,237.50
  4. Step 4: Simplify right side
    8,920.38x = 56,666,477.25
  5. Step 5: Solve for x
    x = 56,666,477.25/8,920.38
  6. Step 6: Final answer
    x = 6,352.47

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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.