Home / 8,412.20-11,620.26-7,528.04

Finding the Fourth Proportional to 8,412.20, 11,620.26 and 7,528.04

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Solution

The fourth proportional to 8,412.20, 11,620.26 and 7,528.04 is: 10,398.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.20 : 11,620.26 = 7,528.04 : x
  2. Step 2: Convert to fraction form
    8,412.20/11,620.26 = 7,528.04/x
  3. Step 3: Cross multiply
    8,412.20x = 11,620.26 × 7,528.04
  4. Step 4: Simplify right side
    8,412.20x = 87,477,782.09
  5. Step 5: Solve for x
    x = 87,477,782.09/8,412.20
  6. Step 6: Final answer
    x = 10,398.92

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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.