Home / 3,436.42-5,142.95-2,121.01

Finding the Fourth Proportional to 3,436.42, 5,142.95 and 2,121.01

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Solution

The fourth proportional to 3,436.42, 5,142.95 and 2,121.01 is: 3,174.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,436.42 : 5,142.95 = 2,121.01 : x
  2. Step 2: Convert to fraction form
    3,436.42/5,142.95 = 2,121.01/x
  3. Step 3: Cross multiply
    3,436.42x = 5,142.95 × 2,121.01
  4. Step 4: Simplify right side
    3,436.42x = 10,908,223.23
  5. Step 5: Solve for x
    x = 10,908,223.23/3,436.42
  6. Step 6: Final answer
    x = 3,174.30

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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.