Home / 6,319.37-8,720.81-3,486.87

Finding the Fourth Proportional to 6,319.37, 8,720.81 and 3,486.87

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Solution

The fourth proportional to 6,319.37, 8,720.81 and 3,486.87 is: 4,811.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,319.37 : 8,720.81 = 3,486.87 : x
  2. Step 2: Convert to fraction form
    6,319.37/8,720.81 = 3,486.87/x
  3. Step 3: Cross multiply
    6,319.37x = 8,720.81 × 3,486.87
  4. Step 4: Simplify right side
    6,319.37x = 30,408,313.33
  5. Step 5: Solve for x
    x = 30,408,313.33/6,319.37
  6. Step 6: Final answer
    x = 4,811.93

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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.