Home / 3,809.20-5,714.70-1,212.13

Finding the Fourth Proportional to 3,809.20, 5,714.70 and 1,212.13

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Solution

The fourth proportional to 3,809.20, 5,714.70 and 1,212.13 is: 1,818.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.20 : 5,714.70 = 1,212.13 : x
  2. Step 2: Convert to fraction form
    3,809.20/5,714.70 = 1,212.13/x
  3. Step 3: Cross multiply
    3,809.20x = 5,714.70 × 1,212.13
  4. Step 4: Simplify right side
    3,809.20x = 6,926,959.31
  5. Step 5: Solve for x
    x = 6,926,959.31/3,809.20
  6. Step 6: Final answer
    x = 1,818.48

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1.5x scale

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.