Home / 8,528.09-12,770.26-7,215.89

Finding the Fourth Proportional to 8,528.09, 12,770.26 and 7,215.89

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Solution

The fourth proportional to 8,528.09, 12,770.26 and 7,215.89 is: 10,805.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,528.09 : 12,770.26 = 7,215.89 : x
  2. Step 2: Convert to fraction form
    8,528.09/12,770.26 = 7,215.89/x
  3. Step 3: Cross multiply
    8,528.09x = 12,770.26 × 7,215.89
  4. Step 4: Simplify right side
    8,528.09x = 92,148,709.54
  5. Step 5: Solve for x
    x = 92,148,709.54/8,528.09
  6. Step 6: Final answer
    x = 10,805.32

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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.