Home / 3,911.20-5,864.40-1,571.56

Finding the Fourth Proportional to 3,911.20, 5,864.40 and 1,571.56

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Solution

The fourth proportional to 3,911.20, 5,864.40 and 1,571.56 is: 2,356.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.20 : 5,864.40 = 1,571.56 : x
  2. Step 2: Convert to fraction form
    3,911.20/5,864.40 = 1,571.56/x
  3. Step 3: Cross multiply
    3,911.20x = 5,864.40 × 1,571.56
  4. Step 4: Simplify right side
    3,911.20x = 9,216,256.46
  5. Step 5: Solve for x
    x = 9,216,256.46/3,911.20
  6. Step 6: Final answer
    x = 2,356.38

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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.