Home / 3,929.10-5,887.35-2,077.80

Finding the Fourth Proportional to 3,929.10, 5,887.35 and 2,077.80

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Solution

The fourth proportional to 3,929.10, 5,887.35 and 2,077.80 is: 3,113.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.10 : 5,887.35 = 2,077.80 : x
  2. Step 2: Convert to fraction form
    3,929.10/5,887.35 = 2,077.80/x
  3. Step 3: Cross multiply
    3,929.10x = 5,887.35 × 2,077.80
  4. Step 4: Simplify right side
    3,929.10x = 12,232,735.83
  5. Step 5: Solve for x
    x = 12,232,735.83/3,929.10
  6. Step 6: Final answer
    x = 3,113.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.