Home / 7,130.20-10,676.10-5,171.80

Finding the Fourth Proportional to 7,130.20, 10,676.10 and 5,171.80

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Solution

The fourth proportional to 7,130.20, 10,676.10 and 5,171.80 is: 7,743.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.20 : 10,676.10 = 5,171.80 : x
  2. Step 2: Convert to fraction form
    7,130.20/10,676.10 = 5,171.80/x
  3. Step 3: Cross multiply
    7,130.20x = 10,676.10 × 5,171.80
  4. Step 4: Simplify right side
    7,130.20x = 55,214,653.98
  5. Step 5: Solve for x
    x = 55,214,653.98/7,130.20
  6. Step 6: Final answer
    x = 7,743.77

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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.