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Finding the Fourth Proportional to 8,339.55, 11,508.62 and 5,355.41

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Solution

The fourth proportional to 8,339.55, 11,508.62 and 5,355.41 is: 7,390.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.55 : 11,508.62 = 5,355.41 : x
  2. Step 2: Convert to fraction form
    8,339.55/11,508.62 = 5,355.41/x
  3. Step 3: Cross multiply
    8,339.55x = 11,508.62 × 5,355.41
  4. Step 4: Simplify right side
    8,339.55x = 61,633,351.86
  5. Step 5: Solve for x
    x = 61,633,351.86/8,339.55
  6. Step 6: Final answer
    x = 7,390.49

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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.