Home / 3,666.20-5,499.30-1,938.20

Finding the Fourth Proportional to 3,666.20, 5,499.30 and 1,938.20

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Solution

The fourth proportional to 3,666.20, 5,499.30 and 1,938.20 is: 2,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,666.20 : 5,499.30 = 1,938.20 : x
  2. Step 2: Convert to fraction form
    3,666.20/5,499.30 = 1,938.20/x
  3. Step 3: Cross multiply
    3,666.20x = 5,499.30 × 1,938.20
  4. Step 4: Simplify right side
    3,666.20x = 10,658,743.26
  5. Step 5: Solve for x
    x = 10,658,743.26/3,666.20
  6. Step 6: Final answer
    x = 2,907.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.