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Finding the Fourth Proportional to 8,509.62, 12,732.36 and 7,646.34

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Solution

The fourth proportional to 8,509.62, 12,732.36 and 7,646.34 is: 11,440.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,509.62 : 12,732.36 = 7,646.34 : x
  2. Step 2: Convert to fraction form
    8,509.62/12,732.36 = 7,646.34/x
  3. Step 3: Cross multiply
    8,509.62x = 12,732.36 × 7,646.34
  4. Step 4: Simplify right side
    8,509.62x = 97,355,953.56
  5. Step 5: Solve for x
    x = 97,355,953.56/8,509.62
  6. Step 6: Final answer
    x = 11,440.69

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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.