Home / 12,719.07-19,078.40-3,485.07

Finding the Fourth Proportional to 12,719.07, 19,078.40 and 3,485.07

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Solution

The fourth proportional to 12,719.07, 19,078.40 and 3,485.07 is: 5,227.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.07 : 19,078.40 = 3,485.07 : x
  2. Step 2: Convert to fraction form
    12,719.07/19,078.40 = 3,485.07/x
  3. Step 3: Cross multiply
    12,719.07x = 19,078.40 × 3,485.07
  4. Step 4: Simplify right side
    12,719.07x = 66,489,568.20
  5. Step 5: Solve for x
    x = 66,489,568.20/12,719.07
  6. Step 6: Final answer
    x = 5,227.55

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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.