Home / 1,756.45-2,634.72-831.79

Finding the Fourth Proportional to 1,756.45, 2,634.72 and 831.79

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Solution

The fourth proportional to 1,756.45, 2,634.72 and 831.79 is: 1,247.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,756.45 : 2,634.72 = 831.79 : x
  2. Step 2: Convert to fraction form
    1,756.45/2,634.72 = 831.79/x
  3. Step 3: Cross multiply
    1,756.45x = 2,634.72 × 831.79
  4. Step 4: Simplify right side
    1,756.45x = 2,191,533.75
  5. Step 5: Solve for x
    x = 2,191,533.75/1,756.45
  6. Step 6: Final answer
    x = 1,247.71

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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.