Home / 3,219.09-4,440.65-2,431.77

Finding the Fourth Proportional to 3,219.09, 4,440.65 and 2,431.77

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Solution

The fourth proportional to 3,219.09, 4,440.65 and 2,431.77 is: 3,354.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.09 : 4,440.65 = 2,431.77 : x
  2. Step 2: Convert to fraction form
    3,219.09/4,440.65 = 2,431.77/x
  3. Step 3: Cross multiply
    3,219.09x = 4,440.65 × 2,431.77
  4. Step 4: Simplify right side
    3,219.09x = 10,798,639.45
  5. Step 5: Solve for x
    x = 10,798,639.45/3,219.09
  6. Step 6: Final answer
    x = 3,354.56

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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.