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Finding the Fourth Proportional to 7,336.40, 11,009.40 and 4,216.40

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Solution

The fourth proportional to 7,336.40, 11,009.40 and 4,216.40 is: 6,327.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,336.40 : 11,009.40 = 4,216.40 : x
  2. Step 2: Convert to fraction form
    7,336.40/11,009.40 = 4,216.40/x
  3. Step 3: Cross multiply
    7,336.40x = 11,009.40 × 4,216.40
  4. Step 4: Simplify right side
    7,336.40x = 46,420,034.16
  5. Step 5: Solve for x
    x = 46,420,034.16/7,336.40
  6. Step 6: Final answer
    x = 6,327.36

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.