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Finding the Fourth Proportional to 8,393.55, 11,580.21 and 5,205.70

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Solution

The fourth proportional to 8,393.55, 11,580.21 and 5,205.70 is: 7,182.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393.55 : 11,580.21 = 5,205.70 : x
  2. Step 2: Convert to fraction form
    8,393.55/11,580.21 = 5,205.70/x
  3. Step 3: Cross multiply
    8,393.55x = 11,580.21 × 5,205.70
  4. Step 4: Simplify right side
    8,393.55x = 60,283,099.20
  5. Step 5: Solve for x
    x = 60,283,099.20/8,393.55
  6. Step 6: Final answer
    x = 7,182.07

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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.