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Finding the Fourth Proportional to 7,188.81, 10,763.19 and 3,671.20

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Solution

The fourth proportional to 7,188.81, 10,763.19 and 3,671.20 is: 5,496.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.81 : 10,763.19 = 3,671.20 : x
  2. Step 2: Convert to fraction form
    7,188.81/10,763.19 = 3,671.20/x
  3. Step 3: Cross multiply
    7,188.81x = 10,763.19 × 3,671.20
  4. Step 4: Simplify right side
    7,188.81x = 39,513,823.13
  5. Step 5: Solve for x
    x = 39,513,823.13/7,188.81
  6. Step 6: Final answer
    x = 5,496.57

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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.