Home / 2,621.07-3,929.18-2,076.75

Finding the Fourth Proportional to 2,621.07, 3,929.18 and 2,076.75

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Solution

The fourth proportional to 2,621.07, 3,929.18 and 2,076.75 is: 3,113.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.07 : 3,929.18 = 2,076.75 : x
  2. Step 2: Convert to fraction form
    2,621.07/3,929.18 = 2,076.75/x
  3. Step 3: Cross multiply
    2,621.07x = 3,929.18 × 2,076.75
  4. Step 4: Simplify right side
    2,621.07x = 8,159,914.18
  5. Step 5: Solve for x
    x = 8,159,914.18/2,621.07
  6. Step 6: Final answer
    x = 3,113.20

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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.