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Finding the Fourth Proportional to 6,893.88, 10,340.78 and 1,699.72

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Solution

The fourth proportional to 6,893.88, 10,340.78 and 1,699.72 is: 2,549.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,893.88 : 10,340.78 = 1,699.72 : x
  2. Step 2: Convert to fraction form
    6,893.88/10,340.78 = 1,699.72/x
  3. Step 3: Cross multiply
    6,893.88x = 10,340.78 × 1,699.72
  4. Step 4: Simplify right side
    6,893.88x = 17,576,430.58
  5. Step 5: Solve for x
    x = 17,576,430.58/6,893.88
  6. Step 6: Final answer
    x = 2,549.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.