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Finding the Fourth Proportional to 7,079.21, 9,728.30 and 6,753.99

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Solution

The fourth proportional to 7,079.21, 9,728.30 and 6,753.99 is: 9,281.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.21 : 9,728.30 = 6,753.99 : x
  2. Step 2: Convert to fraction form
    7,079.21/9,728.30 = 6,753.99/x
  3. Step 3: Cross multiply
    7,079.21x = 9,728.30 × 6,753.99
  4. Step 4: Simplify right side
    7,079.21x = 65,704,894.28
  5. Step 5: Solve for x
    x = 65,704,894.28/7,079.21
  6. Step 6: Final answer
    x = 9,281.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.