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Finding the Fourth Proportional to 8,799.89, 13,187.15 and 8,533.67

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Solution

The fourth proportional to 8,799.89, 13,187.15 and 8,533.67 is: 12,788.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,799.89 : 13,187.15 = 8,533.67 : x
  2. Step 2: Convert to fraction form
    8,799.89/13,187.15 = 8,533.67/x
  3. Step 3: Cross multiply
    8,799.89x = 13,187.15 × 8,533.67
  4. Step 4: Simplify right side
    8,799.89x = 112,534,743.67
  5. Step 5: Solve for x
    x = 112,534,743.67/8,799.89
  6. Step 6: Final answer
    x = 12,788.20

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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.