Home / 2,205.74-3,043.34-1,320.90

Finding the Fourth Proportional to 2,205.74, 3,043.34 and 1,320.90

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Solution

The fourth proportional to 2,205.74, 3,043.34 and 1,320.90 is: 1,822.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.74 : 3,043.34 = 1,320.90 : x
  2. Step 2: Convert to fraction form
    2,205.74/3,043.34 = 1,320.90/x
  3. Step 3: Cross multiply
    2,205.74x = 3,043.34 × 1,320.90
  4. Step 4: Simplify right side
    2,205.74x = 4,019,941.20
  5. Step 5: Solve for x
    x = 4,019,941.20/2,205.74
  6. Step 6: Final answer
    x = 1,822.50

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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.