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Finding the Fourth Proportional to 12,798.98, 19,197.79 and 4,905.27

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Solution

The fourth proportional to 12,798.98, 19,197.79 and 4,905.27 is: 7,357.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.98 : 19,197.79 = 4,905.27 : x
  2. Step 2: Convert to fraction form
    12,798.98/19,197.79 = 4,905.27/x
  3. Step 3: Cross multiply
    12,798.98x = 19,197.79 × 4,905.27
  4. Step 4: Simplify right side
    12,798.98x = 94,170,343.35
  5. Step 5: Solve for x
    x = 94,170,343.35/12,798.98
  6. Step 6: Final answer
    x = 7,357.65

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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.