Home / 3,630.80-5,013.34-2,790.18

Finding the Fourth Proportional to 3,630.80, 5,013.34 and 2,790.18

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Solution

The fourth proportional to 3,630.80, 5,013.34 and 2,790.18 is: 3,852.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.80 : 5,013.34 = 2,790.18 : x
  2. Step 2: Convert to fraction form
    3,630.80/5,013.34 = 2,790.18/x
  3. Step 3: Cross multiply
    3,630.80x = 5,013.34 × 2,790.18
  4. Step 4: Simplify right side
    3,630.80x = 13,988,121.00
  5. Step 5: Solve for x
    x = 13,988,121.00/3,630.80
  6. Step 6: Final answer
    x = 3,852.63

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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.