Home / 6,419.37-8,856.21-3,765.81

Finding the Fourth Proportional to 6,419.37, 8,856.21 and 3,765.81

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Solution

The fourth proportional to 6,419.37, 8,856.21 and 3,765.81 is: 5,195.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.37 : 8,856.21 = 3,765.81 : x
  2. Step 2: Convert to fraction form
    6,419.37/8,856.21 = 3,765.81/x
  3. Step 3: Cross multiply
    6,419.37x = 8,856.21 × 3,765.81
  4. Step 4: Simplify right side
    6,419.37x = 33,350,804.18
  5. Step 5: Solve for x
    x = 33,350,804.18/6,419.37
  6. Step 6: Final answer
    x = 5,195.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.