Home / 12,785.07-19,178.69-3,902.39

Finding the Fourth Proportional to 12,785.07, 19,178.69 and 3,902.39

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Solution

The fourth proportional to 12,785.07, 19,178.69 and 3,902.39 is: 5,853.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,785.07 : 19,178.69 = 3,902.39 : x
  2. Step 2: Convert to fraction form
    12,785.07/19,178.69 = 3,902.39/x
  3. Step 3: Cross multiply
    12,785.07x = 19,178.69 × 3,902.39
  4. Step 4: Simplify right side
    12,785.07x = 74,842,717.04
  5. Step 5: Solve for x
    x = 74,842,717.04/12,785.07
  6. Step 6: Final answer
    x = 5,853.92

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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.