Home / 7,875.16-11,816.40-3,198.39

Finding the Fourth Proportional to 7,875.16, 11,816.40 and 3,198.39

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Solution

The fourth proportional to 7,875.16, 11,816.40 and 3,198.39 is: 4,799.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.16 : 11,816.40 = 3,198.39 : x
  2. Step 2: Convert to fraction form
    7,875.16/11,816.40 = 3,198.39/x
  3. Step 3: Cross multiply
    7,875.16x = 11,816.40 × 3,198.39
  4. Step 4: Simplify right side
    7,875.16x = 37,793,455.60
  5. Step 5: Solve for x
    x = 37,793,455.60/7,875.16
  6. Step 6: Final answer
    x = 4,799.07

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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.