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Finding the Fourth Proportional to 2,850.91, 3,934.28 and 1,672.00

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Solution

The fourth proportional to 2,850.91, 3,934.28 and 1,672.00 is: 2,307.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.91 : 3,934.28 = 1,672.00 : x
  2. Step 2: Convert to fraction form
    2,850.91/3,934.28 = 1,672.00/x
  3. Step 3: Cross multiply
    2,850.91x = 3,934.28 × 1,672.00
  4. Step 4: Simplify right side
    2,850.91x = 6,578,110.50
  5. Step 5: Solve for x
    x = 6,578,110.50/2,850.91
  6. Step 6: Final answer
    x = 2,307.37

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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.