Home / 1,831.23-2,747.88-1,421.19

Finding the Fourth Proportional to 1,831.23, 2,747.88 and 1,421.19

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Solution

The fourth proportional to 1,831.23, 2,747.88 and 1,421.19 is: 2,132.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.23 : 2,747.88 = 1,421.19 : x
  2. Step 2: Convert to fraction form
    1,831.23/2,747.88 = 1,421.19/x
  3. Step 3: Cross multiply
    1,831.23x = 2,747.88 × 1,421.19
  4. Step 4: Simplify right side
    1,831.23x = 3,905,259.58
  5. Step 5: Solve for x
    x = 3,905,259.58/1,831.23
  6. Step 6: Final answer
    x = 2,132.59

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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.