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Finding the Fourth Proportional to 6,969.03, 9,609.89 and 4,978.86

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Solution

The fourth proportional to 6,969.03, 9,609.89 and 4,978.86 is: 6,865.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,969.03 : 9,609.89 = 4,978.86 : x
  2. Step 2: Convert to fraction form
    6,969.03/9,609.89 = 4,978.86/x
  3. Step 3: Cross multiply
    6,969.03x = 9,609.89 × 4,978.86
  4. Step 4: Simplify right side
    6,969.03x = 47,846,272.03
  5. Step 5: Solve for x
    x = 47,846,272.03/6,969.03
  6. Step 6: Final answer
    x = 6,865.56

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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.