Home / 4,986.78-6,882.39-3,126.30

Finding the Fourth Proportional to 4,986.78, 6,882.39 and 3,126.30

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Solution

The fourth proportional to 4,986.78, 6,882.39 and 3,126.30 is: 4,314.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.78 : 6,882.39 = 3,126.30 : x
  2. Step 2: Convert to fraction form
    4,986.78/6,882.39 = 3,126.30/x
  3. Step 3: Cross multiply
    4,986.78x = 6,882.39 × 3,126.30
  4. Step 4: Simplify right side
    4,986.78x = 21,516,415.86
  5. Step 5: Solve for x
    x = 21,516,415.86/4,986.78
  6. Step 6: Final answer
    x = 4,314.69

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1.5x scale

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.