Home / 3,859.70-5,326.07-2,181.25

Finding the Fourth Proportional to 3,859.70, 5,326.07 and 2,181.25

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Solution

The fourth proportional to 3,859.70, 5,326.07 and 2,181.25 is: 3,009.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.70 : 5,326.07 = 2,181.25 : x
  2. Step 2: Convert to fraction form
    3,859.70/5,326.07 = 2,181.25/x
  3. Step 3: Cross multiply
    3,859.70x = 5,326.07 × 2,181.25
  4. Step 4: Simplify right side
    3,859.70x = 11,617,490.19
  5. Step 5: Solve for x
    x = 11,617,490.19/3,859.70
  6. Step 6: Final answer
    x = 3,009.95

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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.