Home / 8,705.19-12,004.30-7,745.07

Finding the Fourth Proportional to 8,705.19, 12,004.30 and 7,745.07

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Solution

The fourth proportional to 8,705.19, 12,004.30 and 7,745.07 is: 10,680.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.19 : 12,004.30 = 7,745.07 : x
  2. Step 2: Convert to fraction form
    8,705.19/12,004.30 = 7,745.07/x
  3. Step 3: Cross multiply
    8,705.19x = 12,004.30 × 7,745.07
  4. Step 4: Simplify right side
    8,705.19x = 92,974,143.80
  5. Step 5: Solve for x
    x = 92,974,143.80/8,705.19
  6. Step 6: Final answer
    x = 10,680.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.