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Finding the Fourth Proportional to 9,762.20, 13,471.88 and 5,285.96

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Solution

The fourth proportional to 9,762.20, 13,471.88 and 5,285.96 is: 7,294.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,762.20 : 13,471.88 = 5,285.96 : x
  2. Step 2: Convert to fraction form
    9,762.20/13,471.88 = 5,285.96/x
  3. Step 3: Cross multiply
    9,762.20x = 13,471.88 × 5,285.96
  4. Step 4: Simplify right side
    9,762.20x = 71,211,725.02
  5. Step 5: Solve for x
    x = 71,211,725.02/9,762.20
  6. Step 6: Final answer
    x = 7,294.64

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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.