Home / 3,840.11-5,730.20-3,426.40

Finding the Fourth Proportional to 3,840.11, 5,730.20 and 3,426.40

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Solution

The fourth proportional to 3,840.11, 5,730.20 and 3,426.40 is: 5,112.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.11 : 5,730.20 = 3,426.40 : x
  2. Step 2: Convert to fraction form
    3,840.11/5,730.20 = 3,426.40/x
  3. Step 3: Cross multiply
    3,840.11x = 5,730.20 × 3,426.40
  4. Step 4: Simplify right side
    3,840.11x = 19,633,957.28
  5. Step 5: Solve for x
    x = 19,633,957.28/3,840.11
  6. Step 6: Final answer
    x = 5,112.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.