Home / 5,661.60-8,485.86-2,149.38

Finding the Fourth Proportional to 5,661.60, 8,485.86 and 2,149.38

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Solution

The fourth proportional to 5,661.60, 8,485.86 and 2,149.38 is: 3,221.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.60 : 8,485.86 = 2,149.38 : x
  2. Step 2: Convert to fraction form
    5,661.60/8,485.86 = 2,149.38/x
  3. Step 3: Cross multiply
    5,661.60x = 8,485.86 × 2,149.38
  4. Step 4: Simplify right side
    5,661.60x = 18,239,337.77
  5. Step 5: Solve for x
    x = 18,239,337.77/5,661.60
  6. Step 6: Final answer
    x = 3,221.59

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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.