Home / 2,005.17-2,766.20-1,218.69

Finding the Fourth Proportional to 2,005.17, 2,766.20 and 1,218.69

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Solution

The fourth proportional to 2,005.17, 2,766.20 and 1,218.69 is: 1,681.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.17 : 2,766.20 = 1,218.69 : x
  2. Step 2: Convert to fraction form
    2,005.17/2,766.20 = 1,218.69/x
  3. Step 3: Cross multiply
    2,005.17x = 2,766.20 × 1,218.69
  4. Step 4: Simplify right side
    2,005.17x = 3,371,134.18
  5. Step 5: Solve for x
    x = 3,371,134.18/2,005.17
  6. Step 6: Final answer
    x = 1,681.22

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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.