Home / 5,641.64-8,460.13-2,131.05

Finding the Fourth Proportional to 5,641.64, 8,460.13 and 2,131.05

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Solution

The fourth proportional to 5,641.64, 8,460.13 and 2,131.05 is: 3,195.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.64 : 8,460.13 = 2,131.05 : x
  2. Step 2: Convert to fraction form
    5,641.64/8,460.13 = 2,131.05/x
  3. Step 3: Cross multiply
    5,641.64x = 8,460.13 × 2,131.05
  4. Step 4: Simplify right side
    5,641.64x = 18,028,949.38
  5. Step 5: Solve for x
    x = 18,028,949.38/5,641.64
  6. Step 6: Final answer
    x = 3,195.69

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Double scale
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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.