Home / 7,131.20-9,841.42-4,106.77

Finding the Fourth Proportional to 7,131.20, 9,841.42 and 4,106.77

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Solution

The fourth proportional to 7,131.20, 9,841.42 and 4,106.77 is: 5,667.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.20 : 9,841.42 = 4,106.77 : x
  2. Step 2: Convert to fraction form
    7,131.20/9,841.42 = 4,106.77/x
  3. Step 3: Cross multiply
    7,131.20x = 9,841.42 × 4,106.77
  4. Step 4: Simplify right side
    7,131.20x = 40,416,399.21
  5. Step 5: Solve for x
    x = 40,416,399.21/7,131.20
  6. Step 6: Final answer
    x = 5,667.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.