Home / 3,749.90-5,621.00-1,409.47

Finding the Fourth Proportional to 3,749.90, 5,621.00 and 1,409.47

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Solution

The fourth proportional to 3,749.90, 5,621.00 and 1,409.47 is: 2,112.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.90 : 5,621.00 = 1,409.47 : x
  2. Step 2: Convert to fraction form
    3,749.90/5,621.00 = 1,409.47/x
  3. Step 3: Cross multiply
    3,749.90x = 5,621.00 × 1,409.47
  4. Step 4: Simplify right side
    3,749.90x = 7,922,609.77
  5. Step 5: Solve for x
    x = 7,922,609.77/3,749.90
  6. Step 6: Final answer
    x = 2,112.76

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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.