Home / 7,820.35-11,730.57-1,976.97

Finding the Fourth Proportional to 7,820.35, 11,730.57 and 1,976.97

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Solution

The fourth proportional to 7,820.35, 11,730.57 and 1,976.97 is: 2,965.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.35 : 11,730.57 = 1,976.97 : x
  2. Step 2: Convert to fraction form
    7,820.35/11,730.57 = 1,976.97/x
  3. Step 3: Cross multiply
    7,820.35x = 11,730.57 × 1,976.97
  4. Step 4: Simplify right side
    7,820.35x = 23,190,933.57
  5. Step 5: Solve for x
    x = 23,190,933.57/7,820.35
  6. Step 6: Final answer
    x = 2,965.46

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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.