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Finding the Fourth Proportional to 2,477.22, 3,715.84 and 745.86

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Solution

The fourth proportional to 2,477.22, 3,715.84 and 745.86 is: 1,118.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,477.22 : 3,715.84 = 745.86 : x
  2. Step 2: Convert to fraction form
    2,477.22/3,715.84 = 745.86/x
  3. Step 3: Cross multiply
    2,477.22x = 3,715.84 × 745.86
  4. Step 4: Simplify right side
    2,477.22x = 2,771,496.42
  5. Step 5: Solve for x
    x = 2,771,496.42/2,477.22
  6. Step 6: Final answer
    x = 1,118.79

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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.