Home / 3,630.80-5,478.62-3,509.30

Finding the Fourth Proportional to 3,630.80, 5,478.62 and 3,509.30

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Solution

The fourth proportional to 3,630.80, 5,478.62 and 3,509.30 is: 5,295.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.80 : 5,478.62 = 3,509.30 : x
  2. Step 2: Convert to fraction form
    3,630.80/5,478.62 = 3,509.30/x
  3. Step 3: Cross multiply
    3,630.80x = 5,478.62 × 3,509.30
  4. Step 4: Simplify right side
    3,630.80x = 19,226,121.17
  5. Step 5: Solve for x
    x = 19,226,121.17/3,630.80
  6. Step 6: Final answer
    x = 5,295.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.