Home / 2,125.92-2,935.47-1,379.61

Finding the Fourth Proportional to 2,125.92, 2,935.47 and 1,379.61

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Solution

The fourth proportional to 2,125.92, 2,935.47 and 1,379.61 is: 1,904.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.92 : 2,935.47 = 1,379.61 : x
  2. Step 2: Convert to fraction form
    2,125.92/2,935.47 = 1,379.61/x
  3. Step 3: Cross multiply
    2,125.92x = 2,935.47 × 1,379.61
  4. Step 4: Simplify right side
    2,125.92x = 4,049,803.77
  5. Step 5: Solve for x
    x = 4,049,803.77/2,125.92
  6. Step 6: Final answer
    x = 1,904.97

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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.