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Finding the Fourth Proportional to 11,479.84, 17,219.12 and 3,688.48

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Solution

The fourth proportional to 11,479.84, 17,219.12 and 3,688.48 is: 5,532.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.84 : 17,219.12 = 3,688.48 : x
  2. Step 2: Convert to fraction form
    11,479.84/17,219.12 = 3,688.48/x
  3. Step 3: Cross multiply
    11,479.84x = 17,219.12 × 3,688.48
  4. Step 4: Simplify right side
    11,479.84x = 63,512,379.74
  5. Step 5: Solve for x
    x = 63,512,379.74/11,479.84
  6. Step 6: Final answer
    x = 5,532.51

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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.