Home / 2,746.78-3,790.89-2,116.80

Finding the Fourth Proportional to 2,746.78, 3,790.89 and 2,116.80

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Solution

The fourth proportional to 2,746.78, 3,790.89 and 2,116.80 is: 2,921.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,746.78 : 3,790.89 = 2,116.80 : x
  2. Step 2: Convert to fraction form
    2,746.78/3,790.89 = 2,116.80/x
  3. Step 3: Cross multiply
    2,746.78x = 3,790.89 × 2,116.80
  4. Step 4: Simplify right side
    2,746.78x = 8,024,555.95
  5. Step 5: Solve for x
    x = 8,024,555.95/2,746.78
  6. Step 6: Final answer
    x = 2,921.44

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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.