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Finding the Fourth Proportional to 6,886.10, 10,329.15 and 5,330.90

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Solution

The fourth proportional to 6,886.10, 10,329.15 and 5,330.90 is: 7,996.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,886.10 : 10,329.15 = 5,330.90 : x
  2. Step 2: Convert to fraction form
    6,886.10/10,329.15 = 5,330.90/x
  3. Step 3: Cross multiply
    6,886.10x = 10,329.15 × 5,330.90
  4. Step 4: Simplify right side
    6,886.10x = 55,063,665.74
  5. Step 5: Solve for x
    x = 55,063,665.74/6,886.10
  6. Step 6: Final answer
    x = 7,996.35

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