Home / 4,986-6,881.76-3,124.08

Finding the Fourth Proportional to 4,986, 6,881.76 and 3,124.08

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Solution

The fourth proportional to 4,986, 6,881.76 and 3,124.08 is: 4,311.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986 : 6,881.76 = 3,124.08 : x
  2. Step 2: Convert to fraction form
    4,986/6,881.76 = 3,124.08/x
  3. Step 3: Cross multiply
    4,986x = 6,881.76 × 3,124.08
  4. Step 4: Simplify right side
    4,986x = 21,499,168.78
  5. Step 5: Solve for x
    x = 21,499,168.78/4,986
  6. Step 6: Final answer
    x = 4,311.91

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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.