Home / 2,205.17-3,042.56-1,320.35

Finding the Fourth Proportional to 2,205.17, 3,042.56 and 1,320.35

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Solution

The fourth proportional to 2,205.17, 3,042.56 and 1,320.35 is: 1,821.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.17 : 3,042.56 = 1,320.35 : x
  2. Step 2: Convert to fraction form
    2,205.17/3,042.56 = 1,320.35/x
  3. Step 3: Cross multiply
    2,205.17x = 3,042.56 × 1,320.35
  4. Step 4: Simplify right side
    2,205.17x = 4,017,232.18
  5. Step 5: Solve for x
    x = 4,017,232.18/2,205.17
  6. Step 6: Final answer
    x = 1,821.73

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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.