Home / 7,191.40-10,788.64-4,072.88

Finding the Fourth Proportional to 7,191.40, 10,788.64 and 4,072.88

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Solution

The fourth proportional to 7,191.40, 10,788.64 and 4,072.88 is: 6,110.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.40 : 10,788.64 = 4,072.88 : x
  2. Step 2: Convert to fraction form
    7,191.40/10,788.64 = 4,072.88/x
  3. Step 3: Cross multiply
    7,191.40x = 10,788.64 × 4,072.88
  4. Step 4: Simplify right side
    7,191.40x = 43,940,836.08
  5. Step 5: Solve for x
    x = 43,940,836.08/7,191.40
  6. Step 6: Final answer
    x = 6,110.19

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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.