Home / 2,115.61-2,919.54-1,184.11

Finding the Fourth Proportional to 2,115.61, 2,919.54 and 1,184.11

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Solution

The fourth proportional to 2,115.61, 2,919.54 and 1,184.11 is: 1,634.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.61 : 2,919.54 = 1,184.11 : x
  2. Step 2: Convert to fraction form
    2,115.61/2,919.54 = 1,184.11/x
  3. Step 3: Cross multiply
    2,115.61x = 2,919.54 × 1,184.11
  4. Step 4: Simplify right side
    2,115.61x = 3,457,049.21
  5. Step 5: Solve for x
    x = 3,457,049.21/2,115.61
  6. Step 6: Final answer
    x = 1,634.07

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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.