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Finding the Fourth Proportional to 8,603.63, 12,907.13 and 2,759.79

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Solution

The fourth proportional to 8,603.63, 12,907.13 and 2,759.79 is: 4,140.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.63 : 12,907.13 = 2,759.79 : x
  2. Step 2: Convert to fraction form
    8,603.63/12,907.13 = 2,759.79/x
  3. Step 3: Cross multiply
    8,603.63x = 12,907.13 × 2,759.79
  4. Step 4: Simplify right side
    8,603.63x = 35,620,954.50
  5. Step 5: Solve for x
    x = 35,620,954.50/8,603.63
  6. Step 6: Final answer
    x = 4,140.22

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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.