Home / 8,319.89-11,481.47-4,543.09

Finding the Fourth Proportional to 8,319.89, 11,481.47 and 4,543.09

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Solution

The fourth proportional to 8,319.89, 11,481.47 and 4,543.09 is: 6,269.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.89 : 11,481.47 = 4,543.09 : x
  2. Step 2: Convert to fraction form
    8,319.89/11,481.47 = 4,543.09/x
  3. Step 3: Cross multiply
    8,319.89x = 11,481.47 × 4,543.09
  4. Step 4: Simplify right side
    8,319.89x = 52,161,334.20
  5. Step 5: Solve for x
    x = 52,161,334.20/8,319.89
  6. Step 6: Final answer
    x = 6,269.47

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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.