Home / 8,130.48-12,199.82-3,203.65

Finding the Fourth Proportional to 8,130.48, 12,199.82 and 3,203.65

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Solution

The fourth proportional to 8,130.48, 12,199.82 and 3,203.65 is: 4,807.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.48 : 12,199.82 = 3,203.65 : x
  2. Step 2: Convert to fraction form
    8,130.48/12,199.82 = 3,203.65/x
  3. Step 3: Cross multiply
    8,130.48x = 12,199.82 × 3,203.65
  4. Step 4: Simplify right side
    8,130.48x = 39,083,952.57
  5. Step 5: Solve for x
    x = 39,083,952.57/8,130.48
  6. Step 6: Final answer
    x = 4,807.09

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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.