Home / 5,639.42-7,782.81-3,401.84

Finding the Fourth Proportional to 5,639.42, 7,782.81 and 3,401.84

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Solution

The fourth proportional to 5,639.42, 7,782.81 and 3,401.84 is: 4,694.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.42 : 7,782.81 = 3,401.84 : x
  2. Step 2: Convert to fraction form
    5,639.42/7,782.81 = 3,401.84/x
  3. Step 3: Cross multiply
    5,639.42x = 7,782.81 × 3,401.84
  4. Step 4: Simplify right side
    5,639.42x = 26,475,874.37
  5. Step 5: Solve for x
    x = 26,475,874.37/5,639.42
  6. Step 6: Final answer
    x = 4,694.79

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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.