Home / 3,881.20-5,818.28-1,571.12

Finding the Fourth Proportional to 3,881.20, 5,818.28 and 1,571.12

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Solution

The fourth proportional to 3,881.20, 5,818.28 and 1,571.12 is: 2,355.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.20 : 5,818.28 = 1,571.12 : x
  2. Step 2: Convert to fraction form
    3,881.20/5,818.28 = 1,571.12/x
  3. Step 3: Cross multiply
    3,881.20x = 5,818.28 × 1,571.12
  4. Step 4: Simplify right side
    3,881.20x = 9,141,216.07
  5. Step 5: Solve for x
    x = 9,141,216.07/3,881.20
  6. Step 6: Final answer
    x = 2,355.26

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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.