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Finding the Fourth Proportional to 4,065.52, 5,605.32 and 3,318.72

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Solution

The fourth proportional to 4,065.52, 5,605.32 and 3,318.72 is: 4,575.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,065.52 : 5,605.32 = 3,318.72 : x
  2. Step 2: Convert to fraction form
    4,065.52/5,605.32 = 3,318.72/x
  3. Step 3: Cross multiply
    4,065.52x = 5,605.32 × 3,318.72
  4. Step 4: Simplify right side
    4,065.52x = 18,602,487.59
  5. Step 5: Solve for x
    x = 18,602,487.59/4,065.52
  6. Step 6: Final answer
    x = 4,575.67

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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.