Home / 2,898.20-3,999.46-1,571.90

Finding the Fourth Proportional to 2,898.20, 3,999.46 and 1,571.90

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Solution

The fourth proportional to 2,898.20, 3,999.46 and 1,571.90 is: 2,169.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.20 : 3,999.46 = 1,571.90 : x
  2. Step 2: Convert to fraction form
    2,898.20/3,999.46 = 1,571.90/x
  3. Step 3: Cross multiply
    2,898.20x = 3,999.46 × 1,571.90
  4. Step 4: Simplify right side
    2,898.20x = 6,286,751.17
  5. Step 5: Solve for x
    x = 6,286,751.17/2,898.20
  6. Step 6: Final answer
    x = 2,169.19

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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.