Home / 3,627.85-5,438.59-1,287.49

Finding the Fourth Proportional to 3,627.85, 5,438.59 and 1,287.49

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Solution

The fourth proportional to 3,627.85, 5,438.59 and 1,287.49 is: 1,930.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,627.85 : 5,438.59 = 1,287.49 : x
  2. Step 2: Convert to fraction form
    3,627.85/5,438.59 = 1,287.49/x
  3. Step 3: Cross multiply
    3,627.85x = 5,438.59 × 1,287.49
  4. Step 4: Simplify right side
    3,627.85x = 7,002,130.24
  5. Step 5: Solve for x
    x = 7,002,130.24/3,627.85
  6. Step 6: Final answer
    x = 1,930.10

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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.