Home / 2,831.78-4,245.62-1,905.04

Finding the Fourth Proportional to 2,831.78, 4,245.62 and 1,905.04

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Solution

The fourth proportional to 2,831.78, 4,245.62 and 1,905.04 is: 2,856.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.78 : 4,245.62 = 1,905.04 : x
  2. Step 2: Convert to fraction form
    2,831.78/4,245.62 = 1,905.04/x
  3. Step 3: Cross multiply
    2,831.78x = 4,245.62 × 1,905.04
  4. Step 4: Simplify right side
    2,831.78x = 8,088,075.92
  5. Step 5: Solve for x
    x = 8,088,075.92/2,831.78
  6. Step 6: Final answer
    x = 2,856.18

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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.