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Finding the Fourth Proportional to 6,855.99, 9,461.30 and 3,871.86

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Solution

The fourth proportional to 6,855.99, 9,461.30 and 3,871.86 is: 5,343.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,855.99 : 9,461.30 = 3,871.86 : x
  2. Step 2: Convert to fraction form
    6,855.99/9,461.30 = 3,871.86/x
  3. Step 3: Cross multiply
    6,855.99x = 9,461.30 × 3,871.86
  4. Step 4: Simplify right side
    6,855.99x = 36,632,809.66
  5. Step 5: Solve for x
    x = 36,632,809.66/6,855.99
  6. Step 6: Final answer
    x = 5,343.18

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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.