Home / 4,320.21-5,954.13-3,139.23

Finding the Fourth Proportional to 4,320.21, 5,954.13 and 3,139.23

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Solution

The fourth proportional to 4,320.21, 5,954.13 and 3,139.23 is: 4,326.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,320.21 : 5,954.13 = 3,139.23 : x
  2. Step 2: Convert to fraction form
    4,320.21/5,954.13 = 3,139.23/x
  3. Step 3: Cross multiply
    4,320.21x = 5,954.13 × 3,139.23
  4. Step 4: Simplify right side
    4,320.21x = 18,691,383.52
  5. Step 5: Solve for x
    x = 18,691,383.52/4,320.21
  6. Step 6: Final answer
    x = 4,326.50

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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.