Home / 3,554.80-4,906.53-2,120.71

Finding the Fourth Proportional to 3,554.80, 4,906.53 and 2,120.71

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Solution

The fourth proportional to 3,554.80, 4,906.53 and 2,120.71 is: 2,927.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,554.80 : 4,906.53 = 2,120.71 : x
  2. Step 2: Convert to fraction form
    3,554.80/4,906.53 = 2,120.71/x
  3. Step 3: Cross multiply
    3,554.80x = 4,906.53 × 2,120.71
  4. Step 4: Simplify right side
    3,554.80x = 10,405,327.24
  5. Step 5: Solve for x
    x = 10,405,327.24/3,554.80
  6. Step 6: Final answer
    x = 2,927.12

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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.