Home / 3,140.27-4,331.69-2,078.06

Finding the Fourth Proportional to 3,140.27, 4,331.69 and 2,078.06

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Solution

The fourth proportional to 3,140.27, 4,331.69 and 2,078.06 is: 2,866.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.27 : 4,331.69 = 2,078.06 : x
  2. Step 2: Convert to fraction form
    3,140.27/4,331.69 = 2,078.06/x
  3. Step 3: Cross multiply
    3,140.27x = 4,331.69 × 2,078.06
  4. Step 4: Simplify right side
    3,140.27x = 9,001,511.72
  5. Step 5: Solve for x
    x = 9,001,511.72/3,140.27
  6. Step 6: Final answer
    x = 2,866.48

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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.