Home / 2,286.62-3,155.45-1,291.68

Finding the Fourth Proportional to 2,286.62, 3,155.45 and 1,291.68

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Solution

The fourth proportional to 2,286.62, 3,155.45 and 1,291.68 is: 1,782.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.62 : 3,155.45 = 1,291.68 : x
  2. Step 2: Convert to fraction form
    2,286.62/3,155.45 = 1,291.68/x
  3. Step 3: Cross multiply
    2,286.62x = 3,155.45 × 1,291.68
  4. Step 4: Simplify right side
    2,286.62x = 4,075,825.20
  5. Step 5: Solve for x
    x = 4,075,825.20/2,286.62
  6. Step 6: Final answer
    x = 1,782.47

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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.