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Finding the Fourth Proportional to 6,455.30, 8,908.90 and 3,801.38

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Solution

The fourth proportional to 6,455.30, 8,908.90 and 3,801.38 is: 5,246.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,455.30 : 8,908.90 = 3,801.38 : x
  2. Step 2: Convert to fraction form
    6,455.30/8,908.90 = 3,801.38/x
  3. Step 3: Cross multiply
    6,455.30x = 8,908.90 × 3,801.38
  4. Step 4: Simplify right side
    6,455.30x = 33,866,114.28
  5. Step 5: Solve for x
    x = 33,866,114.28/6,455.30
  6. Step 6: Final answer
    x = 5,246.25

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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.