Home / 5,411.25-8,117.64-2,122.56

Finding the Fourth Proportional to 5,411.25, 8,117.64 and 2,122.56

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Solution

The fourth proportional to 5,411.25, 8,117.64 and 2,122.56 is: 3,184.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.25 : 8,117.64 = 2,122.56 : x
  2. Step 2: Convert to fraction form
    5,411.25/8,117.64 = 2,122.56/x
  3. Step 3: Cross multiply
    5,411.25x = 8,117.64 × 2,122.56
  4. Step 4: Simplify right side
    5,411.25x = 17,230,177.96
  5. Step 5: Solve for x
    x = 17,230,177.96/5,411.25
  6. Step 6: Final answer
    x = 3,184.14

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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.