Home / 6,386.21-8,813.18-3,995.42

Finding the Fourth Proportional to 6,386.21, 8,813.18 and 3,995.42

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Solution

The fourth proportional to 6,386.21, 8,813.18 and 3,995.42 is: 5,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.21 : 8,813.18 = 3,995.42 : x
  2. Step 2: Convert to fraction form
    6,386.21/8,813.18 = 3,995.42/x
  3. Step 3: Cross multiply
    6,386.21x = 8,813.18 × 3,995.42
  4. Step 4: Simplify right side
    6,386.21x = 35,212,299.08
  5. Step 5: Solve for x
    x = 35,212,299.08/6,386.21
  6. Step 6: Final answer
    x = 5,513.80

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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.