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Finding the Fourth Proportional to 9,160.68, 13,725.71 and 8,819.40

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Solution

The fourth proportional to 9,160.68, 13,725.71 and 8,819.40 is: 13,214.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,160.68 : 13,725.71 = 8,819.40 : x
  2. Step 2: Convert to fraction form
    9,160.68/13,725.71 = 8,819.40/x
  3. Step 3: Cross multiply
    9,160.68x = 13,725.71 × 8,819.40
  4. Step 4: Simplify right side
    9,160.68x = 121,052,482.68
  5. Step 5: Solve for x
    x = 121,052,482.68/9,160.68
  6. Step 6: Final answer
    x = 13,214.36

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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.