Home / 6,738-9,299.40-6,442.80

Finding the Fourth Proportional to 6,738, 9,299.40 and 6,442.80

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Solution

The fourth proportional to 6,738, 9,299.40 and 6,442.80 is: 8,891.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,738 : 9,299.40 = 6,442.80 : x
  2. Step 2: Convert to fraction form
    6,738/9,299.40 = 6,442.80/x
  3. Step 3: Cross multiply
    6,738x = 9,299.40 × 6,442.80
  4. Step 4: Simplify right side
    6,738x = 59,914,174.32
  5. Step 5: Solve for x
    x = 59,914,174.32/6,738
  6. Step 6: Final answer
    x = 8,891.98

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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.