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Finding the Fourth Proportional to 7,385.70, 11,072.16 and 3,684.18

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Solution

The fourth proportional to 7,385.70, 11,072.16 and 3,684.18 is: 5,523.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,385.70 : 11,072.16 = 3,684.18 : x
  2. Step 2: Convert to fraction form
    7,385.70/11,072.16 = 3,684.18/x
  3. Step 3: Cross multiply
    7,385.70x = 11,072.16 × 3,684.18
  4. Step 4: Simplify right side
    7,385.70x = 40,791,830.43
  5. Step 5: Solve for x
    x = 40,791,830.43/7,385.70
  6. Step 6: Final answer
    x = 5,523.08

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1.5x scale

Why These Related Problems?

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