Home / 2,195.79-3,292.47-1,415.76

Finding the Fourth Proportional to 2,195.79, 3,292.47 and 1,415.76

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Solution

The fourth proportional to 2,195.79, 3,292.47 and 1,415.76 is: 2,122.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.79 : 3,292.47 = 1,415.76 : x
  2. Step 2: Convert to fraction form
    2,195.79/3,292.47 = 1,415.76/x
  3. Step 3: Cross multiply
    2,195.79x = 3,292.47 × 1,415.76
  4. Step 4: Simplify right side
    2,195.79x = 4,661,347.33
  5. Step 5: Solve for x
    x = 4,661,347.33/2,195.79
  6. Step 6: Final answer
    x = 2,122.86

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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.