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Finding the Fourth Proportional to 6,670.25, 9,205.11 and 3,686.12

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Solution

The fourth proportional to 6,670.25, 9,205.11 and 3,686.12 is: 5,086.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,670.25 : 9,205.11 = 3,686.12 : x
  2. Step 2: Convert to fraction form
    6,670.25/9,205.11 = 3,686.12/x
  3. Step 3: Cross multiply
    6,670.25x = 9,205.11 × 3,686.12
  4. Step 4: Simplify right side
    6,670.25x = 33,931,094.05
  5. Step 5: Solve for x
    x = 33,931,094.05/6,670.25
  6. Step 6: Final answer
    x = 5,086.93

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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.