Home / 3,917.65-5,406.28-2,425.17

Finding the Fourth Proportional to 3,917.65, 5,406.28 and 2,425.17

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Solution

The fourth proportional to 3,917.65, 5,406.28 and 2,425.17 is: 3,346.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.65 : 5,406.28 = 2,425.17 : x
  2. Step 2: Convert to fraction form
    3,917.65/5,406.28 = 2,425.17/x
  3. Step 3: Cross multiply
    3,917.65x = 5,406.28 × 2,425.17
  4. Step 4: Simplify right side
    3,917.65x = 13,111,148.07
  5. Step 5: Solve for x
    x = 13,111,148.07/3,917.65
  6. Step 6: Final answer
    x = 3,346.69

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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.