Home / 8,130.17-11,212.82-6,448.92

Finding the Fourth Proportional to 8,130.17, 11,212.82 and 6,448.92

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Solution

The fourth proportional to 8,130.17, 11,212.82 and 6,448.92 is: 8,894.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.17 : 11,212.82 = 6,448.92 : x
  2. Step 2: Convert to fraction form
    8,130.17/11,212.82 = 6,448.92/x
  3. Step 3: Cross multiply
    8,130.17x = 11,212.82 × 6,448.92
  4. Step 4: Simplify right side
    8,130.17x = 72,310,519.98
  5. Step 5: Solve for x
    x = 72,310,519.98/8,130.17
  6. Step 6: Final answer
    x = 8,894.09

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.