Home / 4,879.25-7,312.91-2,100.05

Finding the Fourth Proportional to 4,879.25, 7,312.91 and 2,100.05

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Solution

The fourth proportional to 4,879.25, 7,312.91 and 2,100.05 is: 3,147.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.25 : 7,312.91 = 2,100.05 : x
  2. Step 2: Convert to fraction form
    4,879.25/7,312.91 = 2,100.05/x
  3. Step 3: Cross multiply
    4,879.25x = 7,312.91 × 2,100.05
  4. Step 4: Simplify right side
    4,879.25x = 15,357,429.58
  5. Step 5: Solve for x
    x = 15,357,429.58/4,879.25
  6. Step 6: Final answer
    x = 3,147.50

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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.