Home / 8,419.92-11,619.77-4,643.25

Finding the Fourth Proportional to 8,419.92, 11,619.77 and 4,643.25

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Solution

The fourth proportional to 8,419.92, 11,619.77 and 4,643.25 is: 6,407.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.92 : 11,619.77 = 4,643.25 : x
  2. Step 2: Convert to fraction form
    8,419.92/11,619.77 = 4,643.25/x
  3. Step 3: Cross multiply
    8,419.92x = 11,619.77 × 4,643.25
  4. Step 4: Simplify right side
    8,419.92x = 53,953,473.84
  5. Step 5: Solve for x
    x = 53,953,473.84/8,419.92
  6. Step 6: Final answer
    x = 6,407.84

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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.