Home / 8,125.79-12,185.64-3,196.13

Finding the Fourth Proportional to 8,125.79, 12,185.64 and 3,196.13

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Solution

The fourth proportional to 8,125.79, 12,185.64 and 3,196.13 is: 4,792.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.79 : 12,185.64 = 3,196.13 : x
  2. Step 2: Convert to fraction form
    8,125.79/12,185.64 = 3,196.13/x
  3. Step 3: Cross multiply
    8,125.79x = 12,185.64 × 3,196.13
  4. Step 4: Simplify right side
    8,125.79x = 38,946,828.65
  5. Step 5: Solve for x
    x = 38,946,828.65/8,125.79
  6. Step 6: Final answer
    x = 4,792.99

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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.