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Finding the Fourth Proportional to 6,893.94, 9,518.40 and 6,453.30

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Solution

The fourth proportional to 6,893.94, 9,518.40 and 6,453.30 is: 8,910.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,893.94 : 9,518.40 = 6,453.30 : x
  2. Step 2: Convert to fraction form
    6,893.94/9,518.40 = 6,453.30/x
  3. Step 3: Cross multiply
    6,893.94x = 9,518.40 × 6,453.30
  4. Step 4: Simplify right side
    6,893.94x = 61,425,090.72
  5. Step 5: Solve for x
    x = 61,425,090.72/6,893.94
  6. Step 6: Final answer
    x = 8,910.01

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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.