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Finding the Fourth Proportional to 8,460.75, 11,675.70 and 6,670.11

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Solution

The fourth proportional to 8,460.75, 11,675.70 and 6,670.11 is: 9,204.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,460.75 : 11,675.70 = 6,670.11 : x
  2. Step 2: Convert to fraction form
    8,460.75/11,675.70 = 6,670.11/x
  3. Step 3: Cross multiply
    8,460.75x = 11,675.70 × 6,670.11
  4. Step 4: Simplify right side
    8,460.75x = 77,878,203.33
  5. Step 5: Solve for x
    x = 77,878,203.33/8,460.75
  6. Step 6: Final answer
    x = 9,204.65

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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.