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Finding the Fourth Proportional to 8,907.09, 12,291.87 and 4,928.46

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Solution

The fourth proportional to 8,907.09, 12,291.87 and 4,928.46 is: 6,801.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.09 : 12,291.87 = 4,928.46 : x
  2. Step 2: Convert to fraction form
    8,907.09/12,291.87 = 4,928.46/x
  3. Step 3: Cross multiply
    8,907.09x = 12,291.87 × 4,928.46
  4. Step 4: Simplify right side
    8,907.09x = 60,579,989.62
  5. Step 5: Solve for x
    x = 60,579,989.62/8,907.09
  6. Step 6: Final answer
    x = 6,801.32

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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.