Home / 2,831.74-4,246.80-1,721.50

Finding the Fourth Proportional to 2,831.74, 4,246.80 and 1,721.50

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Solution

The fourth proportional to 2,831.74, 4,246.80 and 1,721.50 is: 2,581.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.74 : 4,246.80 = 1,721.50 : x
  2. Step 2: Convert to fraction form
    2,831.74/4,246.80 = 1,721.50/x
  3. Step 3: Cross multiply
    2,831.74x = 4,246.80 × 1,721.50
  4. Step 4: Simplify right side
    2,831.74x = 7,310,866.20
  5. Step 5: Solve for x
    x = 7,310,866.20/2,831.74
  6. Step 6: Final answer
    x = 2,581.76

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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.