Home / 3,187.98-4,400.32-2,127.28

Finding the Fourth Proportional to 3,187.98, 4,400.32 and 2,127.28

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Solution

The fourth proportional to 3,187.98, 4,400.32 and 2,127.28 is: 2,936.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.98 : 4,400.32 = 2,127.28 : x
  2. Step 2: Convert to fraction form
    3,187.98/4,400.32 = 2,127.28/x
  3. Step 3: Cross multiply
    3,187.98x = 4,400.32 × 2,127.28
  4. Step 4: Simplify right side
    3,187.98x = 9,360,712.73
  5. Step 5: Solve for x
    x = 9,360,712.73/3,187.98
  6. Step 6: Final answer
    x = 2,936.25

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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.