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Finding the Fourth Proportional to 6,615.72, 9,124.88 and 4,379.51

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Solution

The fourth proportional to 6,615.72, 9,124.88 and 4,379.51 is: 6,040.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.72 : 9,124.88 = 4,379.51 : x
  2. Step 2: Convert to fraction form
    6,615.72/9,124.88 = 4,379.51/x
  3. Step 3: Cross multiply
    6,615.72x = 9,124.88 × 4,379.51
  4. Step 4: Simplify right side
    6,615.72x = 39,962,481.31
  5. Step 5: Solve for x
    x = 39,962,481.31/6,615.72
  6. Step 6: Final answer
    x = 6,040.53

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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.