Home / 3,422.87-5,130.18-1,571.43

Finding the Fourth Proportional to 3,422.87, 5,130.18 and 1,571.43

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Solution

The fourth proportional to 3,422.87, 5,130.18 and 1,571.43 is: 2,355.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.87 : 5,130.18 = 1,571.43 : x
  2. Step 2: Convert to fraction form
    3,422.87/5,130.18 = 1,571.43/x
  3. Step 3: Cross multiply
    3,422.87x = 5,130.18 × 1,571.43
  4. Step 4: Simplify right side
    3,422.87x = 8,061,718.76
  5. Step 5: Solve for x
    x = 8,061,718.76/3,422.87
  6. Step 6: Final answer
    x = 2,355.25

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1.5x scale

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.