Home / 2,897.87-3,999.06-1,571.58

Finding the Fourth Proportional to 2,897.87, 3,999.06 and 1,571.58

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Solution

The fourth proportional to 2,897.87, 3,999.06 and 1,571.58 is: 2,168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,897.87 : 3,999.06 = 1,571.58 : x
  2. Step 2: Convert to fraction form
    2,897.87/3,999.06 = 1,571.58/x
  3. Step 3: Cross multiply
    2,897.87x = 3,999.06 × 1,571.58
  4. Step 4: Simplify right side
    2,897.87x = 6,284,842.71
  5. Step 5: Solve for x
    x = 6,284,842.71/2,897.87
  6. Step 6: Final answer
    x = 2,168.78

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1.5x scale

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.