Home / 8,110.85-12,107.60-7,126.70

Finding the Fourth Proportional to 8,110.85, 12,107.60 and 7,126.70

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Solution

The fourth proportional to 8,110.85, 12,107.60 and 7,126.70 is: 10,638.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,110.85 : 12,107.60 = 7,126.70 : x
  2. Step 2: Convert to fraction form
    8,110.85/12,107.60 = 7,126.70/x
  3. Step 3: Cross multiply
    8,110.85x = 12,107.60 × 7,126.70
  4. Step 4: Simplify right side
    8,110.85x = 86,287,190.20
  5. Step 5: Solve for x
    x = 86,287,190.20/8,110.85
  6. Step 6: Final answer
    x = 10,638.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.