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Finding the Fourth Proportional to 6,674.81, 9,210.84 and 3,690.45

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Solution

The fourth proportional to 6,674.81, 9,210.84 and 3,690.45 is: 5,092.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,674.81 : 9,210.84 = 3,690.45 : x
  2. Step 2: Convert to fraction form
    6,674.81/9,210.84 = 3,690.45/x
  3. Step 3: Cross multiply
    6,674.81x = 9,210.84 × 3,690.45
  4. Step 4: Simplify right side
    6,674.81x = 33,992,144.48
  5. Step 5: Solve for x
    x = 33,992,144.48/6,674.81
  6. Step 6: Final answer
    x = 5,092.60

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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.