Home / 3,712.10-5,123.21-2,276.21

Finding the Fourth Proportional to 3,712.10, 5,123.21 and 2,276.21

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Solution

The fourth proportional to 3,712.10, 5,123.21 and 2,276.21 is: 3,141.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.10 : 5,123.21 = 2,276.21 : x
  2. Step 2: Convert to fraction form
    3,712.10/5,123.21 = 2,276.21/x
  3. Step 3: Cross multiply
    3,712.10x = 5,123.21 × 2,276.21
  4. Step 4: Simplify right side
    3,712.10x = 11,661,490.45
  5. Step 5: Solve for x
    x = 11,661,490.45/3,712.10
  6. Step 6: Final answer
    x = 3,141.48

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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.