Home / 3,108.90-4,640.58-2,739.84

Finding the Fourth Proportional to 3,108.90, 4,640.58 and 2,739.84

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Solution

The fourth proportional to 3,108.90, 4,640.58 and 2,739.84 is: 4,089.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.90 : 4,640.58 = 2,739.84 : x
  2. Step 2: Convert to fraction form
    3,108.90/4,640.58 = 2,739.84/x
  3. Step 3: Cross multiply
    3,108.90x = 4,640.58 × 2,739.84
  4. Step 4: Simplify right side
    3,108.90x = 12,714,446.71
  5. Step 5: Solve for x
    x = 12,714,446.71/3,108.90
  6. Step 6: Final answer
    x = 4,089.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.