Home / 7,514.20-11,268.60-3,815.20

Finding the Fourth Proportional to 7,514.20, 11,268.60 and 3,815.20

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Solution

The fourth proportional to 7,514.20, 11,268.60 and 3,815.20 is: 5,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,514.20 : 11,268.60 = 3,815.20 : x
  2. Step 2: Convert to fraction form
    7,514.20/11,268.60 = 3,815.20/x
  3. Step 3: Cross multiply
    7,514.20x = 11,268.60 × 3,815.20
  4. Step 4: Simplify right side
    7,514.20x = 42,991,962.72
  5. Step 5: Solve for x
    x = 42,991,962.72/7,514.20
  6. Step 6: Final answer
    x = 5,721.43

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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.