Home / 6,541.90-9,811.89-2,159.40

Finding the Fourth Proportional to 6,541.90, 9,811.89 and 2,159.40

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Solution

The fourth proportional to 6,541.90, 9,811.89 and 2,159.40 is: 3,238.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,541.90 : 9,811.89 = 2,159.40 : x
  2. Step 2: Convert to fraction form
    6,541.90/9,811.89 = 2,159.40/x
  3. Step 3: Cross multiply
    6,541.90x = 9,811.89 × 2,159.40
  4. Step 4: Simplify right side
    6,541.90x = 21,187,758.47
  5. Step 5: Solve for x
    x = 21,187,758.47/6,541.90
  6. Step 6: Final answer
    x = 3,238.78

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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.