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Finding the Fourth Proportional to 8,866.81, 13,260.99 and 7,886.50

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Solution

The fourth proportional to 8,866.81, 13,260.99 and 7,886.50 is: 11,794.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.81 : 13,260.99 = 7,886.50 : x
  2. Step 2: Convert to fraction form
    8,866.81/13,260.99 = 7,886.50/x
  3. Step 3: Cross multiply
    8,866.81x = 13,260.99 × 7,886.50
  4. Step 4: Simplify right side
    8,866.81x = 104,582,797.64
  5. Step 5: Solve for x
    x = 104,582,797.64/8,866.81
  6. Step 6: Final answer
    x = 11,794.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.