Home / 2,206.64-3,309.95-1,385.49

Finding the Fourth Proportional to 2,206.64, 3,309.95 and 1,385.49

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Solution

The fourth proportional to 2,206.64, 3,309.95 and 1,385.49 is: 2,078.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.64 : 3,309.95 = 1,385.49 : x
  2. Step 2: Convert to fraction form
    2,206.64/3,309.95 = 1,385.49/x
  3. Step 3: Cross multiply
    2,206.64x = 3,309.95 × 1,385.49
  4. Step 4: Simplify right side
    2,206.64x = 4,585,905.81
  5. Step 5: Solve for x
    x = 4,585,905.81/2,206.64
  6. Step 6: Final answer
    x = 2,078.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.