Home / 6,620.40-9,136.08-3,636.48

Finding the Fourth Proportional to 6,620.40, 9,136.08 and 3,636.48

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Solution

The fourth proportional to 6,620.40, 9,136.08 and 3,636.48 is: 5,018.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.40 : 9,136.08 = 3,636.48 : x
  2. Step 2: Convert to fraction form
    6,620.40/9,136.08 = 3,636.48/x
  3. Step 3: Cross multiply
    6,620.40x = 9,136.08 × 3,636.48
  4. Step 4: Simplify right side
    6,620.40x = 33,223,172.20
  5. Step 5: Solve for x
    x = 33,223,172.20/6,620.40
  6. Step 6: Final answer
    x = 5,018.30

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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.