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Finding the Fourth Proportional to 8,709.96, 13,064.80 and 2,136.19

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Solution

The fourth proportional to 8,709.96, 13,064.80 and 2,136.19 is: 3,204.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.96 : 13,064.80 = 2,136.19 : x
  2. Step 2: Convert to fraction form
    8,709.96/13,064.80 = 2,136.19/x
  3. Step 3: Cross multiply
    8,709.96x = 13,064.80 × 2,136.19
  4. Step 4: Simplify right side
    8,709.96x = 27,908,895.11
  5. Step 5: Solve for x
    x = 27,908,895.11/8,709.96
  6. Step 6: Final answer
    x = 3,204.25

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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.