Home / 7,225.11-10,835.28-2,781.72

Finding the Fourth Proportional to 7,225.11, 10,835.28 and 2,781.72

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Solution

The fourth proportional to 7,225.11, 10,835.28 and 2,781.72 is: 4,171.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,225.11 : 10,835.28 = 2,781.72 : x
  2. Step 2: Convert to fraction form
    7,225.11/10,835.28 = 2,781.72/x
  3. Step 3: Cross multiply
    7,225.11x = 10,835.28 × 2,781.72
  4. Step 4: Simplify right side
    7,225.11x = 30,140,715.08
  5. Step 5: Solve for x
    x = 30,140,715.08/7,225.11
  6. Step 6: Final answer
    x = 4,171.66

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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.