Home / 3,890.21-5,362.13-2,709.23

Finding the Fourth Proportional to 3,890.21, 5,362.13 and 2,709.23

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Solution

The fourth proportional to 3,890.21, 5,362.13 and 2,709.23 is: 3,734.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.21 : 5,362.13 = 2,709.23 : x
  2. Step 2: Convert to fraction form
    3,890.21/5,362.13 = 2,709.23/x
  3. Step 3: Cross multiply
    3,890.21x = 5,362.13 × 2,709.23
  4. Step 4: Simplify right side
    3,890.21x = 14,527,223.42
  5. Step 5: Solve for x
    x = 14,527,223.42/3,890.21
  6. Step 6: Final answer
    x = 3,734.31

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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.