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Finding the Fourth Proportional to 2,850.84, 3,934.74 and 1,672.32

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Solution

The fourth proportional to 2,850.84, 3,934.74 and 1,672.32 is: 2,308.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.84 : 3,934.74 = 1,672.32 : x
  2. Step 2: Convert to fraction form
    2,850.84/3,934.74 = 1,672.32/x
  3. Step 3: Cross multiply
    2,850.84x = 3,934.74 × 1,672.32
  4. Step 4: Simplify right side
    2,850.84x = 6,580,144.40
  5. Step 5: Solve for x
    x = 6,580,144.40/2,850.84
  6. Step 6: Final answer
    x = 2,308.14

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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.