Home / 3,315.80-4,572.78-2,268.20

Finding the Fourth Proportional to 3,315.80, 4,572.78 and 2,268.20

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Solution

The fourth proportional to 3,315.80, 4,572.78 and 2,268.20 is: 3,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.80 : 4,572.78 = 2,268.20 : x
  2. Step 2: Convert to fraction form
    3,315.80/4,572.78 = 2,268.20/x
  3. Step 3: Cross multiply
    3,315.80x = 4,572.78 × 2,268.20
  4. Step 4: Simplify right side
    3,315.80x = 10,371,979.60
  5. Step 5: Solve for x
    x = 10,371,979.60/3,315.80
  6. Step 6: Final answer
    x = 3,128.05

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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.