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Finding the Fourth Proportional to 8,986.72, 13,478.56 and 2,412.36

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Solution

The fourth proportional to 8,986.72, 13,478.56 and 2,412.36 is: 3,618.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.72 : 13,478.56 = 2,412.36 : x
  2. Step 2: Convert to fraction form
    8,986.72/13,478.56 = 2,412.36/x
  3. Step 3: Cross multiply
    8,986.72x = 13,478.56 × 2,412.36
  4. Step 4: Simplify right side
    8,986.72x = 32,515,139.00
  5. Step 5: Solve for x
    x = 32,515,139.00/8,986.72
  6. Step 6: Final answer
    x = 3,618.13

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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.