Home / 2,291.87-3,162.99-1,297.35

Finding the Fourth Proportional to 2,291.87, 3,162.99 and 1,297.35

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Solution

The fourth proportional to 2,291.87, 3,162.99 and 1,297.35 is: 1,790.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.87 : 3,162.99 = 1,297.35 : x
  2. Step 2: Convert to fraction form
    2,291.87/3,162.99 = 1,297.35/x
  3. Step 3: Cross multiply
    2,291.87x = 3,162.99 × 1,297.35
  4. Step 4: Simplify right side
    2,291.87x = 4,103,505.08
  5. Step 5: Solve for x
    x = 4,103,505.08/2,291.87
  6. Step 6: Final answer
    x = 1,790.47

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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.