Home / 4,871.53-6,720.87-3,078.49

Finding the Fourth Proportional to 4,871.53, 6,720.87 and 3,078.49

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Solution

The fourth proportional to 4,871.53, 6,720.87 and 3,078.49 is: 4,247.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,871.53 : 6,720.87 = 3,078.49 : x
  2. Step 2: Convert to fraction form
    4,871.53/6,720.87 = 3,078.49/x
  3. Step 3: Cross multiply
    4,871.53x = 6,720.87 × 3,078.49
  4. Step 4: Simplify right side
    4,871.53x = 20,690,131.09
  5. Step 5: Solve for x
    x = 20,690,131.09/4,871.53
  6. Step 6: Final answer
    x = 4,247.15

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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.