Home / 3,218.37-4,436.07-2,155.77

Finding the Fourth Proportional to 3,218.37, 4,436.07 and 2,155.77

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Solution

The fourth proportional to 3,218.37, 4,436.07 and 2,155.77 is: 2,971.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.37 : 4,436.07 = 2,155.77 : x
  2. Step 2: Convert to fraction form
    3,218.37/4,436.07 = 2,155.77/x
  3. Step 3: Cross multiply
    3,218.37x = 4,436.07 × 2,155.77
  4. Step 4: Simplify right side
    3,218.37x = 9,563,146.62
  5. Step 5: Solve for x
    x = 9,563,146.62/3,218.37
  6. Step 6: Final answer
    x = 2,971.43

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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.