Home / 2,842.40-4,240.38-2,765.85

Finding the Fourth Proportional to 2,842.40, 4,240.38 and 2,765.85

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Solution

The fourth proportional to 2,842.40, 4,240.38 and 2,765.85 is: 4,126.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,842.40 : 4,240.38 = 2,765.85 : x
  2. Step 2: Convert to fraction form
    2,842.40/4,240.38 = 2,765.85/x
  3. Step 3: Cross multiply
    2,842.40x = 4,240.38 × 2,765.85
  4. Step 4: Simplify right side
    2,842.40x = 11,728,255.02
  5. Step 5: Solve for x
    x = 11,728,255.02/2,842.40
  6. Step 6: Final answer
    x = 4,126.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.