Home / 3,005.15-4,146.63-1,809.84

Finding the Fourth Proportional to 3,005.15, 4,146.63 and 1,809.84

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Solution

The fourth proportional to 3,005.15, 4,146.63 and 1,809.84 is: 2,497.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.15 : 4,146.63 = 1,809.84 : x
  2. Step 2: Convert to fraction form
    3,005.15/4,146.63 = 1,809.84/x
  3. Step 3: Cross multiply
    3,005.15x = 4,146.63 × 1,809.84
  4. Step 4: Simplify right side
    3,005.15x = 7,504,727.79
  5. Step 5: Solve for x
    x = 7,504,727.79/3,005.15
  6. Step 6: Final answer
    x = 2,497.29

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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.