Home / 1,867.98-2,778.19-1,831.12

Finding the Fourth Proportional to 1,867.98, 2,778.19 and 1,831.12

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Solution

The fourth proportional to 1,867.98, 2,778.19 and 1,831.12 is: 2,723.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.98 : 2,778.19 = 1,831.12 : x
  2. Step 2: Convert to fraction form
    1,867.98/2,778.19 = 1,831.12/x
  3. Step 3: Cross multiply
    1,867.98x = 2,778.19 × 1,831.12
  4. Step 4: Simplify right side
    1,867.98x = 5,087,199.27
  5. Step 5: Solve for x
    x = 5,087,199.27/1,867.98
  6. Step 6: Final answer
    x = 2,723.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.