Home / 3,638.69-5,458.03-1,330.19

Finding the Fourth Proportional to 3,638.69, 5,458.03 and 1,330.19

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Solution

The fourth proportional to 3,638.69, 5,458.03 and 1,330.19 is: 1,995.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.69 : 5,458.03 = 1,330.19 : x
  2. Step 2: Convert to fraction form
    3,638.69/5,458.03 = 1,330.19/x
  3. Step 3: Cross multiply
    3,638.69x = 5,458.03 × 1,330.19
  4. Step 4: Simplify right side
    3,638.69x = 7,260,216.93
  5. Step 5: Solve for x
    x = 7,260,216.93/3,638.69
  6. Step 6: Final answer
    x = 1,995.28

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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.