Home / 4,120.12-6,178.56-1,810

Finding the Fourth Proportional to 4,120.12, 6,178.56 and 1,810

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Solution

The fourth proportional to 4,120.12, 6,178.56 and 1,810 is: 2,714.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.12 : 6,178.56 = 1,810 : x
  2. Step 2: Convert to fraction form
    4,120.12/6,178.56 = 1,810/x
  3. Step 3: Cross multiply
    4,120.12x = 6,178.56 × 1,810
  4. Step 4: Simplify right side
    4,120.12x = 11,183,193.60
  5. Step 5: Solve for x
    x = 11,183,193.60/4,120.12
  6. Step 6: Final answer
    x = 2,714.29

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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.