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Finding the Fourth Proportional to 8,533.44, 12,798.72 and 2,990.88

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Solution

The fourth proportional to 8,533.44, 12,798.72 and 2,990.88 is: 4,485.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,533.44 : 12,798.72 = 2,990.88 : x
  2. Step 2: Convert to fraction form
    8,533.44/12,798.72 = 2,990.88/x
  3. Step 3: Cross multiply
    8,533.44x = 12,798.72 × 2,990.88
  4. Step 4: Simplify right side
    8,533.44x = 38,279,435.67
  5. Step 5: Solve for x
    x = 38,279,435.67/8,533.44
  6. Step 6: Final answer
    x = 4,485.82

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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.