Home / 2,205.30-3,043.70-1,320.90

Finding the Fourth Proportional to 2,205.30, 3,043.70 and 1,320.90

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Solution

The fourth proportional to 2,205.30, 3,043.70 and 1,320.90 is: 1,823.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.30 : 3,043.70 = 1,320.90 : x
  2. Step 2: Convert to fraction form
    2,205.30/3,043.70 = 1,320.90/x
  3. Step 3: Cross multiply
    2,205.30x = 3,043.70 × 1,320.90
  4. Step 4: Simplify right side
    2,205.30x = 4,020,423.33
  5. Step 5: Solve for x
    x = 4,020,423.33/2,205.30
  6. Step 6: Final answer
    x = 1,823.07

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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.