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Finding the Fourth Proportional to 6,758.75, 9,333.50 and 6,390.61

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Solution

The fourth proportional to 6,758.75, 9,333.50 and 6,390.61 is: 8,825.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,758.75 : 9,333.50 = 6,390.61 : x
  2. Step 2: Convert to fraction form
    6,758.75/9,333.50 = 6,390.61/x
  3. Step 3: Cross multiply
    6,758.75x = 9,333.50 × 6,390.61
  4. Step 4: Simplify right side
    6,758.75x = 59,646,703.15
  5. Step 5: Solve for x
    x = 59,646,703.15/6,758.75
  6. Step 6: Final answer
    x = 8,825.11

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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.