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Finding the Fourth Proportional to 8,646.48, 12,969.72 and 3,709.08

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Solution

The fourth proportional to 8,646.48, 12,969.72 and 3,709.08 is: 5,563.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.48 : 12,969.72 = 3,709.08 : x
  2. Step 2: Convert to fraction form
    8,646.48/12,969.72 = 3,709.08/x
  3. Step 3: Cross multiply
    8,646.48x = 12,969.72 × 3,709.08
  4. Step 4: Simplify right side
    8,646.48x = 48,105,729.06
  5. Step 5: Solve for x
    x = 48,105,729.06/8,646.48
  6. Step 6: Final answer
    x = 5,563.62

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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.