Home / 2,156.97-3,237.71-1,911.74

Finding the Fourth Proportional to 2,156.97, 3,237.71 and 1,911.74

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Solution

The fourth proportional to 2,156.97, 3,237.71 and 1,911.74 is: 2,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.97 : 3,237.71 = 1,911.74 : x
  2. Step 2: Convert to fraction form
    2,156.97/3,237.71 = 1,911.74/x
  3. Step 3: Cross multiply
    2,156.97x = 3,237.71 × 1,911.74
  4. Step 4: Simplify right side
    2,156.97x = 6,189,633.97
  5. Step 5: Solve for x
    x = 6,189,633.97/2,156.97
  6. Step 6: Final answer
    x = 2,869.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.