Home / 2,851.05-4,280.52-1,971.39

Finding the Fourth Proportional to 2,851.05, 4,280.52 and 1,971.39

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Solution

The fourth proportional to 2,851.05, 4,280.52 and 1,971.39 is: 2,959.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.05 : 4,280.52 = 1,971.39 : x
  2. Step 2: Convert to fraction form
    2,851.05/4,280.52 = 1,971.39/x
  3. Step 3: Cross multiply
    2,851.05x = 4,280.52 × 1,971.39
  4. Step 4: Simplify right side
    2,851.05x = 8,438,574.32
  5. Step 5: Solve for x
    x = 8,438,574.32/2,851.05
  6. Step 6: Final answer
    x = 2,959.81

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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.