Home / 5,155.76-7,727.28-2,378.57

Finding the Fourth Proportional to 5,155.76, 7,727.28 and 2,378.57

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Solution

The fourth proportional to 5,155.76, 7,727.28 and 2,378.57 is: 3,564.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.76 : 7,727.28 = 2,378.57 : x
  2. Step 2: Convert to fraction form
    5,155.76/7,727.28 = 2,378.57/x
  3. Step 3: Cross multiply
    5,155.76x = 7,727.28 × 2,378.57
  4. Step 4: Simplify right side
    5,155.76x = 18,379,837.75
  5. Step 5: Solve for x
    x = 18,379,837.75/5,155.76
  6. Step 6: Final answer
    x = 3,564.92

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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.