Home / 3,831.20-5,748.96-1,639.70

Finding the Fourth Proportional to 3,831.20, 5,748.96 and 1,639.70

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Solution

The fourth proportional to 3,831.20, 5,748.96 and 1,639.70 is: 2,460.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.20 : 5,748.96 = 1,639.70 : x
  2. Step 2: Convert to fraction form
    3,831.20/5,748.96 = 1,639.70/x
  3. Step 3: Cross multiply
    3,831.20x = 5,748.96 × 1,639.70
  4. Step 4: Simplify right side
    3,831.20x = 9,426,569.71
  5. Step 5: Solve for x
    x = 9,426,569.71/3,831.20
  6. Step 6: Final answer
    x = 2,460.47

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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.