Home / 5,109.36-7,664.04-2,185.77

Finding the Fourth Proportional to 5,109.36, 7,664.04 and 2,185.77

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Solution

The fourth proportional to 5,109.36, 7,664.04 and 2,185.77 is: 3,278.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.36 : 7,664.04 = 2,185.77 : x
  2. Step 2: Convert to fraction form
    5,109.36/7,664.04 = 2,185.77/x
  3. Step 3: Cross multiply
    5,109.36x = 7,664.04 × 2,185.77
  4. Step 4: Simplify right side
    5,109.36x = 16,751,828.71
  5. Step 5: Solve for x
    x = 16,751,828.71/5,109.36
  6. Step 6: Final answer
    x = 3,278.66

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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.