Home / 3,185.42-4,395.90-1,769.12

Finding the Fourth Proportional to 3,185.42, 4,395.90 and 1,769.12

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Solution

The fourth proportional to 3,185.42, 4,395.90 and 1,769.12 is: 2,441.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.42 : 4,395.90 = 1,769.12 : x
  2. Step 2: Convert to fraction form
    3,185.42/4,395.90 = 1,769.12/x
  3. Step 3: Cross multiply
    3,185.42x = 4,395.90 × 1,769.12
  4. Step 4: Simplify right side
    3,185.42x = 7,776,874.61
  5. Step 5: Solve for x
    x = 7,776,874.61/3,185.42
  6. Step 6: Final answer
    x = 2,441.40

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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.