Home / 6,581.09-9,871.47-2,138.75

Finding the Fourth Proportional to 6,581.09, 9,871.47 and 2,138.75

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Solution

The fourth proportional to 6,581.09, 9,871.47 and 2,138.75 is: 3,208.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,581.09 : 9,871.47 = 2,138.75 : x
  2. Step 2: Convert to fraction form
    6,581.09/9,871.47 = 2,138.75/x
  3. Step 3: Cross multiply
    6,581.09x = 9,871.47 × 2,138.75
  4. Step 4: Simplify right side
    6,581.09x = 21,112,557.11
  5. Step 5: Solve for x
    x = 21,112,557.11/6,581.09
  6. Step 6: Final answer
    x = 3,208.07

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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.