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Finding the Fourth Proportional to 3,139.41, 4,329.41 and 2,392.05

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Solution

The fourth proportional to 3,139.41, 4,329.41 and 2,392.05 is: 3,298.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.41 : 4,329.41 = 2,392.05 : x
  2. Step 2: Convert to fraction form
    3,139.41/4,329.41 = 2,392.05/x
  3. Step 3: Cross multiply
    3,139.41x = 4,329.41 × 2,392.05
  4. Step 4: Simplify right side
    3,139.41x = 10,356,153.23
  5. Step 5: Solve for x
    x = 10,356,153.23/3,139.41
  6. Step 6: Final answer
    x = 3,298.76

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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.