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Finding the Fourth Proportional to 8,575.45, 12,840.63 and 6,900.67

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Solution

The fourth proportional to 8,575.45, 12,840.63 and 6,900.67 is: 10,332.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,575.45 : 12,840.63 = 6,900.67 : x
  2. Step 2: Convert to fraction form
    8,575.45/12,840.63 = 6,900.67/x
  3. Step 3: Cross multiply
    8,575.45x = 12,840.63 × 6,900.67
  4. Step 4: Simplify right side
    8,575.45x = 88,608,886.02
  5. Step 5: Solve for x
    x = 88,608,886.02/8,575.45
  6. Step 6: Final answer
    x = 10,332.86

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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.