Home / 3,921.65-5,406.63-3,359.71

Finding the Fourth Proportional to 3,921.65, 5,406.63 and 3,359.71

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Solution

The fourth proportional to 3,921.65, 5,406.63 and 3,359.71 is: 4,631.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.65 : 5,406.63 = 3,359.71 : x
  2. Step 2: Convert to fraction form
    3,921.65/5,406.63 = 3,359.71/x
  3. Step 3: Cross multiply
    3,921.65x = 5,406.63 × 3,359.71
  4. Step 4: Simplify right side
    3,921.65x = 18,164,681.84
  5. Step 5: Solve for x
    x = 18,164,681.84/3,921.65
  6. Step 6: Final answer
    x = 4,631.90

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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.