Home / 3,065.09-4,230.77-2,280.20

Finding the Fourth Proportional to 3,065.09, 4,230.77 and 2,280.20

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Solution

The fourth proportional to 3,065.09, 4,230.77 and 2,280.20 is: 3,147.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,065.09 : 4,230.77 = 2,280.20 : x
  2. Step 2: Convert to fraction form
    3,065.09/4,230.77 = 2,280.20/x
  3. Step 3: Cross multiply
    3,065.09x = 4,230.77 × 2,280.20
  4. Step 4: Simplify right side
    3,065.09x = 9,646,969.20
  5. Step 5: Solve for x
    x = 9,646,969.20/3,065.09
  6. Step 6: Final answer
    x = 3,147.37

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Half scale
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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.