Home / 3,429.57-5,144.34-1,121.07

Finding the Fourth Proportional to 3,429.57, 5,144.34 and 1,121.07

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Solution

The fourth proportional to 3,429.57, 5,144.34 and 1,121.07 is: 1,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.57 : 5,144.34 = 1,121.07 : x
  2. Step 2: Convert to fraction form
    3,429.57/5,144.34 = 1,121.07/x
  3. Step 3: Cross multiply
    3,429.57x = 5,144.34 × 1,121.07
  4. Step 4: Simplify right side
    3,429.57x = 5,767,165.24
  5. Step 5: Solve for x
    x = 5,767,165.24/3,429.57
  6. Step 6: Final answer
    x = 1,681.60

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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.