Home / 8,208.21-12,312.75-2,660.82

Finding the Fourth Proportional to 8,208.21, 12,312.75 and 2,660.82

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Solution

The fourth proportional to 8,208.21, 12,312.75 and 2,660.82 is: 3,991.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,208.21 : 12,312.75 = 2,660.82 : x
  2. Step 2: Convert to fraction form
    8,208.21/12,312.75 = 2,660.82/x
  3. Step 3: Cross multiply
    8,208.21x = 12,312.75 × 2,660.82
  4. Step 4: Simplify right side
    8,208.21x = 32,762,011.46
  5. Step 5: Solve for x
    x = 32,762,011.46/8,208.21
  6. Step 6: Final answer
    x = 3,991.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.