Home / 3,122.80-4,309.49-1,706.51

Finding the Fourth Proportional to 3,122.80, 4,309.49 and 1,706.51

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Solution

The fourth proportional to 3,122.80, 4,309.49 and 1,706.51 is: 2,355.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.80 : 4,309.49 = 1,706.51 : x
  2. Step 2: Convert to fraction form
    3,122.80/4,309.49 = 1,706.51/x
  3. Step 3: Cross multiply
    3,122.80x = 4,309.49 × 1,706.51
  4. Step 4: Simplify right side
    3,122.80x = 7,354,202.82
  5. Step 5: Solve for x
    x = 7,354,202.82/3,122.80
  6. Step 6: Final answer
    x = 2,355.00

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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.