Home / 3,139.79-4,352.72-2,973.33

Finding the Fourth Proportional to 3,139.79, 4,352.72 and 2,973.33

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Solution

The fourth proportional to 3,139.79, 4,352.72 and 2,973.33 is: 4,121.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.79 : 4,352.72 = 2,973.33 : x
  2. Step 2: Convert to fraction form
    3,139.79/4,352.72 = 2,973.33/x
  3. Step 3: Cross multiply
    3,139.79x = 4,352.72 × 2,973.33
  4. Step 4: Simplify right side
    3,139.79x = 12,942,058.09
  5. Step 5: Solve for x
    x = 12,942,058.09/3,139.79
  6. Step 6: Final answer
    x = 4,121.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.