Home / 7,835.20-11,752.80-6,105.12

Finding the Fourth Proportional to 7,835.20, 11,752.80 and 6,105.12

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Solution

The fourth proportional to 7,835.20, 11,752.80 and 6,105.12 is: 9,157.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,835.20 : 11,752.80 = 6,105.12 : x
  2. Step 2: Convert to fraction form
    7,835.20/11,752.80 = 6,105.12/x
  3. Step 3: Cross multiply
    7,835.20x = 11,752.80 × 6,105.12
  4. Step 4: Simplify right side
    7,835.20x = 71,752,254.34
  5. Step 5: Solve for x
    x = 71,752,254.34/7,835.20
  6. Step 6: Final answer
    x = 9,157.68

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Similar ratio
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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.