Home / 2,778.18-3,829.23-1,969.57

Finding the Fourth Proportional to 2,778.18, 3,829.23 and 1,969.57

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Solution

The fourth proportional to 2,778.18, 3,829.23 and 1,969.57 is: 2,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.18 : 3,829.23 = 1,969.57 : x
  2. Step 2: Convert to fraction form
    2,778.18/3,829.23 = 1,969.57/x
  3. Step 3: Cross multiply
    2,778.18x = 3,829.23 × 1,969.57
  4. Step 4: Simplify right side
    2,778.18x = 7,541,936.53
  5. Step 5: Solve for x
    x = 7,541,936.53/2,778.18
  6. Step 6: Final answer
    x = 2,714.70

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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.