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Finding the Fourth Proportional to 7,191.60, 9,924.15 and 4,047.18

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Solution

The fourth proportional to 7,191.60, 9,924.15 and 4,047.18 is: 5,584.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.60 : 9,924.15 = 4,047.18 : x
  2. Step 2: Convert to fraction form
    7,191.60/9,924.15 = 4,047.18/x
  3. Step 3: Cross multiply
    7,191.60x = 9,924.15 × 4,047.18
  4. Step 4: Simplify right side
    7,191.60x = 40,164,821.40
  5. Step 5: Solve for x
    x = 40,164,821.40/7,191.60
  6. Step 6: Final answer
    x = 5,584.96

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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.