Home / 8,419.85-11,619.39-5,064.61

Finding the Fourth Proportional to 8,419.85, 11,619.39 and 5,064.61

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Solution

The fourth proportional to 8,419.85, 11,619.39 and 5,064.61 is: 6,989.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.85 : 11,619.39 = 5,064.61 : x
  2. Step 2: Convert to fraction form
    8,419.85/11,619.39 = 5,064.61/x
  3. Step 3: Cross multiply
    8,419.85x = 11,619.39 × 5,064.61
  4. Step 4: Simplify right side
    8,419.85x = 58,847,678.79
  5. Step 5: Solve for x
    x = 58,847,678.79/8,419.85
  6. Step 6: Final answer
    x = 6,989.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.