Home / 3,448.68-4,757.70-2,121.90

Finding the Fourth Proportional to 3,448.68, 4,757.70 and 2,121.90

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Solution

The fourth proportional to 3,448.68, 4,757.70 and 2,121.90 is: 2,927.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,448.68 : 4,757.70 = 2,121.90 : x
  2. Step 2: Convert to fraction form
    3,448.68/4,757.70 = 2,121.90/x
  3. Step 3: Cross multiply
    3,448.68x = 4,757.70 × 2,121.90
  4. Step 4: Simplify right side
    3,448.68x = 10,095,363.63
  5. Step 5: Solve for x
    x = 10,095,363.63/3,448.68
  6. Step 6: Final answer
    x = 2,927.31

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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.