Home / 2,746.80-3,786.18-2,156.34

Finding the Fourth Proportional to 2,746.80, 3,786.18 and 2,156.34

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Solution

The fourth proportional to 2,746.80, 3,786.18 and 2,156.34 is: 2,972.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,746.80 : 3,786.18 = 2,156.34 : x
  2. Step 2: Convert to fraction form
    2,746.80/3,786.18 = 2,156.34/x
  3. Step 3: Cross multiply
    2,746.80x = 3,786.18 × 2,156.34
  4. Step 4: Simplify right side
    2,746.80x = 8,164,291.38
  5. Step 5: Solve for x
    x = 8,164,291.38/2,746.80
  6. Step 6: Final answer
    x = 2,972.29

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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.