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Finding the Fourth Proportional to 2,851.93, 3,936.36 and 1,672.84

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Solution

The fourth proportional to 2,851.93, 3,936.36 and 1,672.84 is: 2,308.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.93 : 3,936.36 = 1,672.84 : x
  2. Step 2: Convert to fraction form
    2,851.93/3,936.36 = 1,672.84/x
  3. Step 3: Cross multiply
    2,851.93x = 3,936.36 × 1,672.84
  4. Step 4: Simplify right side
    2,851.93x = 6,584,900.46
  5. Step 5: Solve for x
    x = 6,584,900.46/2,851.93
  6. Step 6: Final answer
    x = 2,308.93

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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.