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Finding the Fourth Proportional to 8,777.58, 12,112.59 and 4,797.90

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Solution

The fourth proportional to 8,777.58, 12,112.59 and 4,797.90 is: 6,620.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.58 : 12,112.59 = 4,797.90 : x
  2. Step 2: Convert to fraction form
    8,777.58/12,112.59 = 4,797.90/x
  3. Step 3: Cross multiply
    8,777.58x = 12,112.59 × 4,797.90
  4. Step 4: Simplify right side
    8,777.58x = 58,114,995.56
  5. Step 5: Solve for x
    x = 58,114,995.56/8,777.58
  6. Step 6: Final answer
    x = 6,620.84

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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.