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Finding the Fourth Proportional to 8,079.84, 12,108.36 and 6,429.04

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Solution

The fourth proportional to 8,079.84, 12,108.36 and 6,429.04 is: 9,634.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.84 : 12,108.36 = 6,429.04 : x
  2. Step 2: Convert to fraction form
    8,079.84/12,108.36 = 6,429.04/x
  3. Step 3: Cross multiply
    8,079.84x = 12,108.36 × 6,429.04
  4. Step 4: Simplify right side
    8,079.84x = 77,845,130.77
  5. Step 5: Solve for x
    x = 77,845,130.77/8,079.84
  6. Step 6: Final answer
    x = 9,634.49

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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.