Home / 2,783.16-3,839.40-2,340.90

Finding the Fourth Proportional to 2,783.16, 3,839.40 and 2,340.90

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Solution

The fourth proportional to 2,783.16, 3,839.40 and 2,340.90 is: 3,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.16 : 3,839.40 = 2,340.90 : x
  2. Step 2: Convert to fraction form
    2,783.16/3,839.40 = 2,340.90/x
  3. Step 3: Cross multiply
    2,783.16x = 3,839.40 × 2,340.90
  4. Step 4: Simplify right side
    2,783.16x = 8,987,651.46
  5. Step 5: Solve for x
    x = 8,987,651.46/2,783.16
  6. Step 6: Final answer
    x = 3,229.30

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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.