Home / 6,855.09-9,459.48-3,871.21

Finding the Fourth Proportional to 6,855.09, 9,459.48 and 3,871.21

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Solution

The fourth proportional to 6,855.09, 9,459.48 and 3,871.21 is: 5,341.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,855.09 : 9,459.48 = 3,871.21 : x
  2. Step 2: Convert to fraction form
    6,855.09/9,459.48 = 3,871.21/x
  3. Step 3: Cross multiply
    6,855.09x = 9,459.48 × 3,871.21
  4. Step 4: Simplify right side
    6,855.09x = 36,619,633.57
  5. Step 5: Solve for x
    x = 36,619,633.57/6,855.09
  6. Step 6: Final answer
    x = 5,341.96

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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.