Home / 6,619.96-9,134.16-3,929.92

Finding the Fourth Proportional to 6,619.96, 9,134.16 and 3,929.92

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Solution

The fourth proportional to 6,619.96, 9,134.16 and 3,929.92 is: 5,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.96 : 9,134.16 = 3,929.92 : x
  2. Step 2: Convert to fraction form
    6,619.96/9,134.16 = 3,929.92/x
  3. Step 3: Cross multiply
    6,619.96x = 9,134.16 × 3,929.92
  4. Step 4: Simplify right side
    6,619.96x = 35,896,518.07
  5. Step 5: Solve for x
    x = 35,896,518.07/6,619.96
  6. Step 6: Final answer
    x = 5,422.47

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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.