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Finding the Fourth Proportional to 8,606.30, 12,909.72 and 3,669.08

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Solution

The fourth proportional to 8,606.30, 12,909.72 and 3,669.08 is: 5,503.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.30 : 12,909.72 = 3,669.08 : x
  2. Step 2: Convert to fraction form
    8,606.30/12,909.72 = 3,669.08/x
  3. Step 3: Cross multiply
    8,606.30x = 12,909.72 × 3,669.08
  4. Step 4: Simplify right side
    8,606.30x = 47,366,795.46
  5. Step 5: Solve for x
    x = 47,366,795.46/8,606.30
  6. Step 6: Final answer
    x = 5,503.74

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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.