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Finding the Fourth Proportional to 8,809.38, 12,156.93 and 4,830.66

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Solution

The fourth proportional to 8,809.38, 12,156.93 and 4,830.66 is: 6,666.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.38 : 12,156.93 = 4,830.66 : x
  2. Step 2: Convert to fraction form
    8,809.38/12,156.93 = 4,830.66/x
  3. Step 3: Cross multiply
    8,809.38x = 12,156.93 × 4,830.66
  4. Step 4: Simplify right side
    8,809.38x = 58,725,995.47
  5. Step 5: Solve for x
    x = 58,725,995.47/8,809.38
  6. Step 6: Final answer
    x = 6,666.30

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Half scale
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Double scale
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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.