Home / 2,765.40-4,156.20-2,716.80

Finding the Fourth Proportional to 2,765.40, 4,156.20 and 2,716.80

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Solution

The fourth proportional to 2,765.40, 4,156.20 and 2,716.80 is: 4,083.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.40 : 4,156.20 = 2,716.80 : x
  2. Step 2: Convert to fraction form
    2,765.40/4,156.20 = 2,716.80/x
  3. Step 3: Cross multiply
    2,765.40x = 4,156.20 × 2,716.80
  4. Step 4: Simplify right side
    2,765.40x = 11,291,564.16
  5. Step 5: Solve for x
    x = 11,291,564.16/2,765.40
  6. Step 6: Final answer
    x = 4,083.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.