Home / 6,511.21-8,986.62-3,860.08

Finding the Fourth Proportional to 6,511.21, 8,986.62 and 3,860.08

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Solution

The fourth proportional to 6,511.21, 8,986.62 and 3,860.08 is: 5,327.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.21 : 8,986.62 = 3,860.08 : x
  2. Step 2: Convert to fraction form
    6,511.21/8,986.62 = 3,860.08/x
  3. Step 3: Cross multiply
    6,511.21x = 8,986.62 × 3,860.08
  4. Step 4: Simplify right side
    6,511.21x = 34,689,072.13
  5. Step 5: Solve for x
    x = 34,689,072.13/6,511.21
  6. Step 6: Final answer
    x = 5,327.59

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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.