Home / 2,415.10-3,622.65-1,119.10

Finding the Fourth Proportional to 2,415.10, 3,622.65 and 1,119.10

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Solution

The fourth proportional to 2,415.10, 3,622.65 and 1,119.10 is: 1,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.10 : 3,622.65 = 1,119.10 : x
  2. Step 2: Convert to fraction form
    2,415.10/3,622.65 = 1,119.10/x
  3. Step 3: Cross multiply
    2,415.10x = 3,622.65 × 1,119.10
  4. Step 4: Simplify right side
    2,415.10x = 4,054,107.62
  5. Step 5: Solve for x
    x = 4,054,107.62/2,415.10
  6. Step 6: Final answer
    x = 1,678.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.