Home / 2,898.07-3,999.34-1,571.78

Finding the Fourth Proportional to 2,898.07, 3,999.34 and 1,571.78

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Solution

The fourth proportional to 2,898.07, 3,999.34 and 1,571.78 is: 2,169.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.07 : 3,999.34 = 1,571.78 : x
  2. Step 2: Convert to fraction form
    2,898.07/3,999.34 = 1,571.78/x
  3. Step 3: Cross multiply
    2,898.07x = 3,999.34 × 1,571.78
  4. Step 4: Simplify right side
    2,898.07x = 6,286,054.77
  5. Step 5: Solve for x
    x = 6,286,054.77/2,898.07
  6. Step 6: Final answer
    x = 2,169.05

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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.