Home / 2,187.44-3,018.96-1,401.68

Finding the Fourth Proportional to 2,187.44, 3,018.96 and 1,401.68

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Solution

The fourth proportional to 2,187.44, 3,018.96 and 1,401.68 is: 1,934.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.44 : 3,018.96 = 1,401.68 : x
  2. Step 2: Convert to fraction form
    2,187.44/3,018.96 = 1,401.68/x
  3. Step 3: Cross multiply
    2,187.44x = 3,018.96 × 1,401.68
  4. Step 4: Simplify right side
    2,187.44x = 4,231,615.85
  5. Step 5: Solve for x
    x = 4,231,615.85/2,187.44
  6. Step 6: Final answer
    x = 1,934.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.