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Finding the Fourth Proportional to 3,099.40, 4,649.46 and 908.08

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Solution

The fourth proportional to 3,099.40, 4,649.46 and 908.08 is: 1,362.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,099.40 : 4,649.46 = 908.08 : x
  2. Step 2: Convert to fraction form
    3,099.40/4,649.46 = 908.08/x
  3. Step 3: Cross multiply
    3,099.40x = 4,649.46 × 908.08
  4. Step 4: Simplify right side
    3,099.40x = 4,222,081.64
  5. Step 5: Solve for x
    x = 4,222,081.64/3,099.40
  6. Step 6: Final answer
    x = 1,362.23

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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.