Home / 2,836.12-3,915.78-2,313.40

Finding the Fourth Proportional to 2,836.12, 3,915.78 and 2,313.40

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Solution

The fourth proportional to 2,836.12, 3,915.78 and 2,313.40 is: 3,194.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.12 : 3,915.78 = 2,313.40 : x
  2. Step 2: Convert to fraction form
    2,836.12/3,915.78 = 2,313.40/x
  3. Step 3: Cross multiply
    2,836.12x = 3,915.78 × 2,313.40
  4. Step 4: Simplify right side
    2,836.12x = 9,058,765.45
  5. Step 5: Solve for x
    x = 9,058,765.45/2,836.12
  6. Step 6: Final answer
    x = 3,194.07

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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.