Home / 4,879.77-7,319.61-2,108.40

Finding the Fourth Proportional to 4,879.77, 7,319.61 and 2,108.40

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Solution

The fourth proportional to 4,879.77, 7,319.61 and 2,108.40 is: 3,162.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.77 : 7,319.61 = 2,108.40 : x
  2. Step 2: Convert to fraction form
    4,879.77/7,319.61 = 2,108.40/x
  3. Step 3: Cross multiply
    4,879.77x = 7,319.61 × 2,108.40
  4. Step 4: Simplify right side
    4,879.77x = 15,432,665.72
  5. Step 5: Solve for x
    x = 15,432,665.72/4,879.77
  6. Step 6: Final answer
    x = 3,162.58

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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.