Home / 3,628.90-5,443.79-1,407.77

Finding the Fourth Proportional to 3,628.90, 5,443.79 and 1,407.77

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Solution

The fourth proportional to 3,628.90, 5,443.79 and 1,407.77 is: 2,111.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,628.90 : 5,443.79 = 1,407.77 : x
  2. Step 2: Convert to fraction form
    3,628.90/5,443.79 = 1,407.77/x
  3. Step 3: Cross multiply
    3,628.90x = 5,443.79 × 1,407.77
  4. Step 4: Simplify right side
    3,628.90x = 7,663,604.25
  5. Step 5: Solve for x
    x = 7,663,604.25/3,628.90
  6. Step 6: Final answer
    x = 2,111.83

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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.