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Finding the Fourth Proportional to 11,880.58, 17,820.88 and 3,561.47

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Solution

The fourth proportional to 11,880.58, 17,820.88 and 3,561.47 is: 5,342.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,880.58 : 17,820.88 = 3,561.47 : x
  2. Step 2: Convert to fraction form
    11,880.58/17,820.88 = 3,561.47/x
  3. Step 3: Cross multiply
    11,880.58x = 17,820.88 × 3,561.47
  4. Step 4: Simplify right side
    11,880.58x = 63,468,529.49
  5. Step 5: Solve for x
    x = 63,468,529.49/11,880.58
  6. Step 6: Final answer
    x = 5,342.21

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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.