Home / 7,628.83-11,440.80-3,930.57

Finding the Fourth Proportional to 7,628.83, 11,440.80 and 3,930.57

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Solution

The fourth proportional to 7,628.83, 11,440.80 and 3,930.57 is: 5,894.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,628.83 : 11,440.80 = 3,930.57 : x
  2. Step 2: Convert to fraction form
    7,628.83/11,440.80 = 3,930.57/x
  3. Step 3: Cross multiply
    7,628.83x = 11,440.80 × 3,930.57
  4. Step 4: Simplify right side
    7,628.83x = 44,968,865.26
  5. Step 5: Solve for x
    x = 44,968,865.26/7,628.83
  6. Step 6: Final answer
    x = 5,894.60

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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.