Home / 2,187.75-3,014.91-1,400.43

Finding the Fourth Proportional to 2,187.75, 3,014.91 and 1,400.43

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Solution

The fourth proportional to 2,187.75, 3,014.91 and 1,400.43 is: 1,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.75 : 3,014.91 = 1,400.43 : x
  2. Step 2: Convert to fraction form
    2,187.75/3,014.91 = 1,400.43/x
  3. Step 3: Cross multiply
    2,187.75x = 3,014.91 × 1,400.43
  4. Step 4: Simplify right side
    2,187.75x = 4,222,170.41
  5. Step 5: Solve for x
    x = 4,222,170.41/2,187.75
  6. Step 6: Final answer
    x = 1,929.91

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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.