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Finding the Fourth Proportional to 8,386.50, 11,573.73 and 4,660.50

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Solution

The fourth proportional to 8,386.50, 11,573.73 and 4,660.50 is: 6,431.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.50 : 11,573.73 = 4,660.50 : x
  2. Step 2: Convert to fraction form
    8,386.50/11,573.73 = 4,660.50/x
  3. Step 3: Cross multiply
    8,386.50x = 11,573.73 × 4,660.50
  4. Step 4: Simplify right side
    8,386.50x = 53,939,368.67
  5. Step 5: Solve for x
    x = 53,939,368.67/8,386.50
  6. Step 6: Final answer
    x = 6,431.69

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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.