Home / 5,641.65-8,456.81-2,131.11

Finding the Fourth Proportional to 5,641.65, 8,456.81 and 2,131.11

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Solution

The fourth proportional to 5,641.65, 8,456.81 and 2,131.11 is: 3,194.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.65 : 8,456.81 = 2,131.11 : x
  2. Step 2: Convert to fraction form
    5,641.65/8,456.81 = 2,131.11/x
  3. Step 3: Cross multiply
    5,641.65x = 8,456.81 × 2,131.11
  4. Step 4: Simplify right side
    5,641.65x = 18,022,381.70
  5. Step 5: Solve for x
    x = 18,022,381.70/5,641.65
  6. Step 6: Final answer
    x = 3,194.52

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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.