Home / 5,439.13-8,160.11-2,106.38

Finding the Fourth Proportional to 5,439.13, 8,160.11 and 2,106.38

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Solution

The fourth proportional to 5,439.13, 8,160.11 and 2,106.38 is: 3,160.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.13 : 8,160.11 = 2,106.38 : x
  2. Step 2: Convert to fraction form
    5,439.13/8,160.11 = 2,106.38/x
  3. Step 3: Cross multiply
    5,439.13x = 8,160.11 × 2,106.38
  4. Step 4: Simplify right side
    5,439.13x = 17,188,292.50
  5. Step 5: Solve for x
    x = 17,188,292.50/5,439.13
  6. Step 6: Final answer
    x = 3,160.12

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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.