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Finding the Fourth Proportional to 6,263.80, 8,640.50 and 3,907.32

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Solution

The fourth proportional to 6,263.80, 8,640.50 and 3,907.32 is: 5,389.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,263.80 : 8,640.50 = 3,907.32 : x
  2. Step 2: Convert to fraction form
    6,263.80/8,640.50 = 3,907.32/x
  3. Step 3: Cross multiply
    6,263.80x = 8,640.50 × 3,907.32
  4. Step 4: Simplify right side
    6,263.80x = 33,761,198.46
  5. Step 5: Solve for x
    x = 33,761,198.46/6,263.80
  6. Step 6: Final answer
    x = 5,389.89

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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.