Home / 2,841.79-4,262.82-1,280.11

Finding the Fourth Proportional to 2,841.79, 4,262.82 and 1,280.11

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Solution

The fourth proportional to 2,841.79, 4,262.82 and 1,280.11 is: 1,920.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,841.79 : 4,262.82 = 1,280.11 : x
  2. Step 2: Convert to fraction form
    2,841.79/4,262.82 = 1,280.11/x
  3. Step 3: Cross multiply
    2,841.79x = 4,262.82 × 1,280.11
  4. Step 4: Simplify right side
    2,841.79x = 5,456,878.51
  5. Step 5: Solve for x
    x = 5,456,878.51/2,841.79
  6. Step 6: Final answer
    x = 1,920.23

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1.5x scale

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.