Home / 2,913.86-4,021.17-1,587.56

Finding the Fourth Proportional to 2,913.86, 4,021.17 and 1,587.56

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Solution

The fourth proportional to 2,913.86, 4,021.17 and 1,587.56 is: 2,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.86 : 4,021.17 = 1,587.56 : x
  2. Step 2: Convert to fraction form
    2,913.86/4,021.17 = 1,587.56/x
  3. Step 3: Cross multiply
    2,913.86x = 4,021.17 × 1,587.56
  4. Step 4: Simplify right side
    2,913.86x = 6,383,828.54
  5. Step 5: Solve for x
    x = 6,383,828.54/2,913.86
  6. Step 6: Final answer
    x = 2,190.85

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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.