Home / 4,879.20-7,319.70-1,416.36

Finding the Fourth Proportional to 4,879.20, 7,319.70 and 1,416.36

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Solution

The fourth proportional to 4,879.20, 7,319.70 and 1,416.36 is: 2,124.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.20 : 7,319.70 = 1,416.36 : x
  2. Step 2: Convert to fraction form
    4,879.20/7,319.70 = 1,416.36/x
  3. Step 3: Cross multiply
    4,879.20x = 7,319.70 × 1,416.36
  4. Step 4: Simplify right side
    4,879.20x = 10,367,330.29
  5. Step 5: Solve for x
    x = 10,367,330.29/4,879.20
  6. Step 6: Final answer
    x = 2,124.80

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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.