Home / 3,139.44-4,328.69-2,578.11

Finding the Fourth Proportional to 3,139.44, 4,328.69 and 2,578.11

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Solution

The fourth proportional to 3,139.44, 4,328.69 and 2,578.11 is: 3,554.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.44 : 4,328.69 = 2,578.11 : x
  2. Step 2: Convert to fraction form
    3,139.44/4,328.69 = 2,578.11/x
  3. Step 3: Cross multiply
    3,139.44x = 4,328.69 × 2,578.11
  4. Step 4: Simplify right side
    3,139.44x = 11,159,826.09
  5. Step 5: Solve for x
    x = 11,159,826.09/3,139.44
  6. Step 6: Final answer
    x = 3,554.72

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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.