Home / 3,831.20-5,746.80-1,641.50

Finding the Fourth Proportional to 3,831.20, 5,746.80 and 1,641.50

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Solution

The fourth proportional to 3,831.20, 5,746.80 and 1,641.50 is: 2,462.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.20 : 5,746.80 = 1,641.50 : x
  2. Step 2: Convert to fraction form
    3,831.20/5,746.80 = 1,641.50/x
  3. Step 3: Cross multiply
    3,831.20x = 5,746.80 × 1,641.50
  4. Step 4: Simplify right side
    3,831.20x = 9,433,372.20
  5. Step 5: Solve for x
    x = 9,433,372.20/3,831.20
  6. Step 6: Final answer
    x = 2,462.25

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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.