Home / 2,115.91-2,919.99-1,276.93

Finding the Fourth Proportional to 2,115.91, 2,919.99 and 1,276.93

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Solution

The fourth proportional to 2,115.91, 2,919.99 and 1,276.93 is: 1,762.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.91 : 2,919.99 = 1,276.93 : x
  2. Step 2: Convert to fraction form
    2,115.91/2,919.99 = 1,276.93/x
  3. Step 3: Cross multiply
    2,115.91x = 2,919.99 × 1,276.93
  4. Step 4: Simplify right side
    2,115.91x = 3,728,622.83
  5. Step 5: Solve for x
    x = 3,728,622.83/2,115.91
  6. Step 6: Final answer
    x = 1,762.18

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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.