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Finding the Fourth Proportional to 8,745.12, 13,106.76 and 6,888.92

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Solution

The fourth proportional to 8,745.12, 13,106.76 and 6,888.92 is: 10,324.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.12 : 13,106.76 = 6,888.92 : x
  2. Step 2: Convert to fraction form
    8,745.12/13,106.76 = 6,888.92/x
  3. Step 3: Cross multiply
    8,745.12x = 13,106.76 × 6,888.92
  4. Step 4: Simplify right side
    8,745.12x = 90,291,421.10
  5. Step 5: Solve for x
    x = 90,291,421.10/8,745.12
  6. Step 6: Final answer
    x = 10,324.78

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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.