Home / 6,316.20-8,716.40-3,665.19

Finding the Fourth Proportional to 6,316.20, 8,716.40 and 3,665.19

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Solution

The fourth proportional to 6,316.20, 8,716.40 and 3,665.19 is: 5,057.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,316.20 : 8,716.40 = 3,665.19 : x
  2. Step 2: Convert to fraction form
    6,316.20/8,716.40 = 3,665.19/x
  3. Step 3: Cross multiply
    6,316.20x = 8,716.40 × 3,665.19
  4. Step 4: Simplify right side
    6,316.20x = 31,947,262.12
  5. Step 5: Solve for x
    x = 31,947,262.12/6,316.20
  6. Step 6: Final answer
    x = 5,057.99

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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.