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Finding the Fourth Proportional to 8,865.81, 13,259.49 and 7,885.50

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Solution

The fourth proportional to 8,865.81, 13,259.49 and 7,885.50 is: 11,793.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.81 : 13,259.49 = 7,885.50 : x
  2. Step 2: Convert to fraction form
    8,865.81/13,259.49 = 7,885.50/x
  3. Step 3: Cross multiply
    8,865.81x = 13,259.49 × 7,885.50
  4. Step 4: Simplify right side
    8,865.81x = 104,557,721.39
  5. Step 5: Solve for x
    x = 104,557,721.39/8,865.81
  6. Step 6: Final answer
    x = 11,793.37

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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.