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Finding the Fourth Proportional to 3,630.20, 5,075.80 and 3,630.20

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Solution

The fourth proportional to 3,630.20, 5,075.80 and 3,630.20 is: 5,075.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.20 : 5,075.80 = 3,630.20 : x
  2. Step 2: Convert to fraction form
    3,630.20/5,075.80 = 3,630.20/x
  3. Step 3: Cross multiply
    3,630.20x = 5,075.80 × 3,630.20
  4. Step 4: Simplify right side
    3,630.20x = 18,426,169.16
  5. Step 5: Solve for x
    x = 18,426,169.16/3,630.20
  6. Step 6: Final answer
    x = 5,075.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.