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Finding the Fourth Proportional to 7,486.94, 10,331.50 and 4,129.58

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Solution

The fourth proportional to 7,486.94, 10,331.50 and 4,129.58 is: 5,698.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.94 : 10,331.50 = 4,129.58 : x
  2. Step 2: Convert to fraction form
    7,486.94/10,331.50 = 4,129.58/x
  3. Step 3: Cross multiply
    7,486.94x = 10,331.50 × 4,129.58
  4. Step 4: Simplify right side
    7,486.94x = 42,664,755.77
  5. Step 5: Solve for x
    x = 42,664,755.77/7,486.94
  6. Step 6: Final answer
    x = 5,698.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.