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Finding the Fourth Proportional to 8,684.70, 11,984.54 and 5,099.18

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Solution

The fourth proportional to 8,684.70, 11,984.54 and 5,099.18 is: 7,036.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,684.70 : 11,984.54 = 5,099.18 : x
  2. Step 2: Convert to fraction form
    8,684.70/11,984.54 = 5,099.18/x
  3. Step 3: Cross multiply
    8,684.70x = 11,984.54 × 5,099.18
  4. Step 4: Simplify right side
    8,684.70x = 61,111,326.68
  5. Step 5: Solve for x
    x = 61,111,326.68/8,684.70
  6. Step 6: Final answer
    x = 7,036.67

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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.