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Finding the Fourth Proportional to 7,790.95, 11,659.06 and 6,708.39

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Solution

The fourth proportional to 7,790.95, 11,659.06 and 6,708.39 is: 10,039.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.95 : 11,659.06 = 6,708.39 : x
  2. Step 2: Convert to fraction form
    7,790.95/11,659.06 = 6,708.39/x
  3. Step 3: Cross multiply
    7,790.95x = 11,659.06 × 6,708.39
  4. Step 4: Simplify right side
    7,790.95x = 78,213,521.51
  5. Step 5: Solve for x
    x = 78,213,521.51/7,790.95
  6. Step 6: Final answer
    x = 10,039.02

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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.