Home / 3,810.79-5,258.18-2,132.21

Finding the Fourth Proportional to 3,810.79, 5,258.18 and 2,132.21

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Solution

The fourth proportional to 3,810.79, 5,258.18 and 2,132.21 is: 2,942.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.79 : 5,258.18 = 2,132.21 : x
  2. Step 2: Convert to fraction form
    3,810.79/5,258.18 = 2,132.21/x
  3. Step 3: Cross multiply
    3,810.79x = 5,258.18 × 2,132.21
  4. Step 4: Simplify right side
    3,810.79x = 11,211,562.45
  5. Step 5: Solve for x
    x = 11,211,562.45/3,810.79
  6. Step 6: Final answer
    x = 2,942.06

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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.