Home / 8,485.23-12,729.75-2,938.66

Finding the Fourth Proportional to 8,485.23, 12,729.75 and 2,938.66

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Solution

The fourth proportional to 8,485.23, 12,729.75 and 2,938.66 is: 4,408.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.23 : 12,729.75 = 2,938.66 : x
  2. Step 2: Convert to fraction form
    8,485.23/12,729.75 = 2,938.66/x
  3. Step 3: Cross multiply
    8,485.23x = 12,729.75 × 2,938.66
  4. Step 4: Simplify right side
    8,485.23x = 37,408,407.14
  5. Step 5: Solve for x
    x = 37,408,407.14/8,485.23
  6. Step 6: Final answer
    x = 4,408.65

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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.