Home / 2,205.45-3,043.58-1,210.75

Finding the Fourth Proportional to 2,205.45, 3,043.58 and 1,210.75

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Solution

The fourth proportional to 2,205.45, 3,043.58 and 1,210.75 is: 1,670.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.45 : 3,043.58 = 1,210.75 : x
  2. Step 2: Convert to fraction form
    2,205.45/3,043.58 = 1,210.75/x
  3. Step 3: Cross multiply
    2,205.45x = 3,043.58 × 1,210.75
  4. Step 4: Simplify right side
    2,205.45x = 3,685,000.82
  5. Step 5: Solve for x
    x = 3,685,000.82/2,205.45
  6. Step 6: Final answer
    x = 1,670.86

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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.