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Finding the Fourth Proportional to 8,885.86, 12,262.40 and 4,907.02

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Solution

The fourth proportional to 8,885.86, 12,262.40 and 4,907.02 is: 6,771.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,885.86 : 12,262.40 = 4,907.02 : x
  2. Step 2: Convert to fraction form
    8,885.86/12,262.40 = 4,907.02/x
  3. Step 3: Cross multiply
    8,885.86x = 12,262.40 × 4,907.02
  4. Step 4: Simplify right side
    8,885.86x = 60,171,842.05
  5. Step 5: Solve for x
    x = 60,171,842.05/8,885.86
  6. Step 6: Final answer
    x = 6,771.64

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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.