Home / 2,851.09-4,275.60-1,207.75

Finding the Fourth Proportional to 2,851.09, 4,275.60 and 1,207.75

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Solution

The fourth proportional to 2,851.09, 4,275.60 and 1,207.75 is: 1,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.09 : 4,275.60 = 1,207.75 : x
  2. Step 2: Convert to fraction form
    2,851.09/4,275.60 = 1,207.75/x
  3. Step 3: Cross multiply
    2,851.09x = 4,275.60 × 1,207.75
  4. Step 4: Simplify right side
    2,851.09x = 5,163,855.90
  5. Step 5: Solve for x
    x = 5,163,855.90/2,851.09
  6. Step 6: Final answer
    x = 1,811.19

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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.