Home / 7,619.65-11,429.51-2,686.61

Finding the Fourth Proportional to 7,619.65, 11,429.51 and 2,686.61

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Solution

The fourth proportional to 7,619.65, 11,429.51 and 2,686.61 is: 4,029.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.65 : 11,429.51 = 2,686.61 : x
  2. Step 2: Convert to fraction form
    7,619.65/11,429.51 = 2,686.61/x
  3. Step 3: Cross multiply
    7,619.65x = 11,429.51 × 2,686.61
  4. Step 4: Simplify right side
    7,619.65x = 30,706,635.86
  5. Step 5: Solve for x
    x = 30,706,635.86/7,619.65
  6. Step 6: Final answer
    x = 4,029.93

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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.