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Finding the Fourth Proportional to 7,514.80, 11,266.80 and 4,228.90

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Solution

The fourth proportional to 7,514.80, 11,266.80 and 4,228.90 is: 6,340.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,514.80 : 11,266.80 = 4,228.90 : x
  2. Step 2: Convert to fraction form
    7,514.80/11,266.80 = 4,228.90/x
  3. Step 3: Cross multiply
    7,514.80x = 11,266.80 × 4,228.90
  4. Step 4: Simplify right side
    7,514.80x = 47,646,170.52
  5. Step 5: Solve for x
    x = 47,646,170.52/7,514.80
  6. Step 6: Final answer
    x = 6,340.31

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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.