Home / 3,810.19-5,258.16-2,131.66

Finding the Fourth Proportional to 3,810.19, 5,258.16 and 2,131.66

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Solution

The fourth proportional to 3,810.19, 5,258.16 and 2,131.66 is: 2,941.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.19 : 5,258.16 = 2,131.66 : x
  2. Step 2: Convert to fraction form
    3,810.19/5,258.16 = 2,131.66/x
  3. Step 3: Cross multiply
    3,810.19x = 5,258.16 × 2,131.66
  4. Step 4: Simplify right side
    3,810.19x = 11,208,609.35
  5. Step 5: Solve for x
    x = 11,208,609.35/3,810.19
  6. Step 6: Final answer
    x = 2,941.75

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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.