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Finding the Fourth Proportional to 8,865.75, 13,303.95 and 7,958.15

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Solution

The fourth proportional to 8,865.75, 13,303.95 and 7,958.15 is: 11,941.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.75 : 13,303.95 = 7,958.15 : x
  2. Step 2: Convert to fraction form
    8,865.75/13,303.95 = 7,958.15/x
  3. Step 3: Cross multiply
    8,865.75x = 13,303.95 × 7,958.15
  4. Step 4: Simplify right side
    8,865.75x = 105,874,783.22
  5. Step 5: Solve for x
    x = 105,874,783.22/8,865.75
  6. Step 6: Final answer
    x = 11,941.99

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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.