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Finding the Fourth Proportional to 11,290.88, 15,581.42 and 6,322.88

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Solution

The fourth proportional to 11,290.88, 15,581.42 and 6,322.88 is: 8,725.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,290.88 : 15,581.42 = 6,322.88 : x
  2. Step 2: Convert to fraction form
    11,290.88/15,581.42 = 6,322.88/x
  3. Step 3: Cross multiply
    11,290.88x = 15,581.42 × 6,322.88
  4. Step 4: Simplify right side
    11,290.88x = 98,519,339.37
  5. Step 5: Solve for x
    x = 98,519,339.37/11,290.88
  6. Step 6: Final answer
    x = 8,725.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.