Home / 4,917.49-6,786.21-2,679.40

Finding the Fourth Proportional to 4,917.49, 6,786.21 and 2,679.40

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Solution

The fourth proportional to 4,917.49, 6,786.21 and 2,679.40 is: 3,697.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,917.49 : 6,786.21 = 2,679.40 : x
  2. Step 2: Convert to fraction form
    4,917.49/6,786.21 = 2,679.40/x
  3. Step 3: Cross multiply
    4,917.49x = 6,786.21 × 2,679.40
  4. Step 4: Simplify right side
    4,917.49x = 18,182,971.07
  5. Step 5: Solve for x
    x = 18,182,971.07/4,917.49
  6. Step 6: Final answer
    x = 3,697.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.