Home / 8,930.86-13,390.38-3,993.70

Finding the Fourth Proportional to 8,930.86, 13,390.38 and 3,993.70

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Solution

The fourth proportional to 8,930.86, 13,390.38 and 3,993.70 is: 5,987.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.86 : 13,390.38 = 3,993.70 : x
  2. Step 2: Convert to fraction form
    8,930.86/13,390.38 = 3,993.70/x
  3. Step 3: Cross multiply
    8,930.86x = 13,390.38 × 3,993.70
  4. Step 4: Simplify right side
    8,930.86x = 53,477,160.61
  5. Step 5: Solve for x
    x = 53,477,160.61/8,930.86
  6. Step 6: Final answer
    x = 5,987.91

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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.