Home / 3,426.12-5,139.32-1,345.92

Finding the Fourth Proportional to 3,426.12, 5,139.32 and 1,345.92

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Solution

The fourth proportional to 3,426.12, 5,139.32 and 1,345.92 is: 2,018.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.12 : 5,139.32 = 1,345.92 : x
  2. Step 2: Convert to fraction form
    3,426.12/5,139.32 = 1,345.92/x
  3. Step 3: Cross multiply
    3,426.12x = 5,139.32 × 1,345.92
  4. Step 4: Simplify right side
    3,426.12x = 6,917,113.57
  5. Step 5: Solve for x
    x = 6,917,113.57/3,426.12
  6. Step 6: Final answer
    x = 2,018.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.