Home / 2,186.31-3,015.56-2,113.99

Finding the Fourth Proportional to 2,186.31, 3,015.56 and 2,113.99

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Solution

The fourth proportional to 2,186.31, 3,015.56 and 2,113.99 is: 2,915.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.31 : 3,015.56 = 2,113.99 : x
  2. Step 2: Convert to fraction form
    2,186.31/3,015.56 = 2,113.99/x
  3. Step 3: Cross multiply
    2,186.31x = 3,015.56 × 2,113.99
  4. Step 4: Simplify right side
    2,186.31x = 6,374,863.68
  5. Step 5: Solve for x
    x = 6,374,863.68/2,186.31
  6. Step 6: Final answer
    x = 2,915.81

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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.