Home / 2,851.28-4,277.94-1,291.64

Finding the Fourth Proportional to 2,851.28, 4,277.94 and 1,291.64

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Solution

The fourth proportional to 2,851.28, 4,277.94 and 1,291.64 is: 1,937.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.28 : 4,277.94 = 1,291.64 : x
  2. Step 2: Convert to fraction form
    2,851.28/4,277.94 = 1,291.64/x
  3. Step 3: Cross multiply
    2,851.28x = 4,277.94 × 1,291.64
  4. Step 4: Simplify right side
    2,851.28x = 5,525,558.42
  5. Step 5: Solve for x
    x = 5,525,558.42/2,851.28
  6. Step 6: Final answer
    x = 1,937.92

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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.