Home / 2,665.12-3,989.04-2,011.36

Finding the Fourth Proportional to 2,665.12, 3,989.04 and 2,011.36

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Solution

The fourth proportional to 2,665.12, 3,989.04 and 2,011.36 is: 3,010.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.12 : 3,989.04 = 2,011.36 : x
  2. Step 2: Convert to fraction form
    2,665.12/3,989.04 = 2,011.36/x
  3. Step 3: Cross multiply
    2,665.12x = 3,989.04 × 2,011.36
  4. Step 4: Simplify right side
    2,665.12x = 8,023,395.49
  5. Step 5: Solve for x
    x = 8,023,395.49/2,665.12
  6. Step 6: Final answer
    x = 3,010.52

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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.