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Finding the Fourth Proportional to 8,796.80, 12,138.45 and 7,008.81

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Solution

The fourth proportional to 8,796.80, 12,138.45 and 7,008.81 is: 9,671.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,796.80 : 12,138.45 = 7,008.81 : x
  2. Step 2: Convert to fraction form
    8,796.80/12,138.45 = 7,008.81/x
  3. Step 3: Cross multiply
    8,796.80x = 12,138.45 × 7,008.81
  4. Step 4: Simplify right side
    8,796.80x = 85,076,089.74
  5. Step 5: Solve for x
    x = 85,076,089.74/8,796.80
  6. Step 6: Final answer
    x = 9,671.26

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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.