Home / 2,286.48-3,155.09-1,689.28

Finding the Fourth Proportional to 2,286.48, 3,155.09 and 1,689.28

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Solution

The fourth proportional to 2,286.48, 3,155.09 and 1,689.28 is: 2,331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.48 : 3,155.09 = 1,689.28 : x
  2. Step 2: Convert to fraction form
    2,286.48/3,155.09 = 1,689.28/x
  3. Step 3: Cross multiply
    2,286.48x = 3,155.09 × 1,689.28
  4. Step 4: Simplify right side
    2,286.48x = 5,329,830.44
  5. Step 5: Solve for x
    x = 5,329,830.44/2,286.48
  6. Step 6: Final answer
    x = 2,331.02

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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.