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Finding the Fourth Proportional to 2,879.18, 4,318.74 and 1,905.06

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Solution

The fourth proportional to 2,879.18, 4,318.74 and 1,905.06 is: 2,857.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.18 : 4,318.74 = 1,905.06 : x
  2. Step 2: Convert to fraction form
    2,879.18/4,318.74 = 1,905.06/x
  3. Step 3: Cross multiply
    2,879.18x = 4,318.74 × 1,905.06
  4. Step 4: Simplify right side
    2,879.18x = 8,227,458.82
  5. Step 5: Solve for x
    x = 8,227,458.82/2,879.18
  6. Step 6: Final answer
    x = 2,857.57

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1.5x scale

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.