Home / 7,790.54-11,678.86-2,859.03

Finding the Fourth Proportional to 7,790.54, 11,678.86 and 2,859.03

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Solution

The fourth proportional to 7,790.54, 11,678.86 and 2,859.03 is: 4,286.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.54 : 11,678.86 = 2,859.03 : x
  2. Step 2: Convert to fraction form
    7,790.54/11,678.86 = 2,859.03/x
  3. Step 3: Cross multiply
    7,790.54x = 11,678.86 × 2,859.03
  4. Step 4: Simplify right side
    7,790.54x = 33,390,258.48
  5. Step 5: Solve for x
    x = 33,390,258.48/7,790.54
  6. Step 6: Final answer
    x = 4,286.00

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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.