Home / 8,136.05-12,204.07-7,720.52

Finding the Fourth Proportional to 8,136.05, 12,204.07 and 7,720.52

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Solution

The fourth proportional to 8,136.05, 12,204.07 and 7,720.52 is: 11,580.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,136.05 : 12,204.07 = 7,720.52 : x
  2. Step 2: Convert to fraction form
    8,136.05/12,204.07 = 7,720.52/x
  3. Step 3: Cross multiply
    8,136.05x = 12,204.07 × 7,720.52
  4. Step 4: Simplify right side
    8,136.05x = 94,221,686.19
  5. Step 5: Solve for x
    x = 94,221,686.19/8,136.05
  6. Step 6: Final answer
    x = 11,580.77

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Double scale
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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.