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Finding the Fourth Proportional to 8,606.64, 12,910.72 and 2,762.08

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Solution

The fourth proportional to 8,606.64, 12,910.72 and 2,762.08 is: 4,143.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.64 : 12,910.72 = 2,762.08 : x
  2. Step 2: Convert to fraction form
    8,606.64/12,910.72 = 2,762.08/x
  3. Step 3: Cross multiply
    8,606.64x = 12,910.72 × 2,762.08
  4. Step 4: Simplify right side
    8,606.64x = 35,660,441.50
  5. Step 5: Solve for x
    x = 35,660,441.50/8,606.64
  6. Step 6: Final answer
    x = 4,143.36

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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.