Home / 2,838.78-3,913.29-1,996.74

Finding the Fourth Proportional to 2,838.78, 3,913.29 and 1,996.74

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Solution

The fourth proportional to 2,838.78, 3,913.29 and 1,996.74 is: 2,752.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.78 : 3,913.29 = 1,996.74 : x
  2. Step 2: Convert to fraction form
    2,838.78/3,913.29 = 1,996.74/x
  3. Step 3: Cross multiply
    2,838.78x = 3,913.29 × 1,996.74
  4. Step 4: Simplify right side
    2,838.78x = 7,813,822.67
  5. Step 5: Solve for x
    x = 7,813,822.67/2,838.78
  6. Step 6: Final answer
    x = 2,752.53

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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.