Home / 7,514.40-11,271.60-3,619.20

Finding the Fourth Proportional to 7,514.40, 11,271.60 and 3,619.20

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Solution

The fourth proportional to 7,514.40, 11,271.60 and 3,619.20 is: 5,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,514.40 : 11,271.60 = 3,619.20 : x
  2. Step 2: Convert to fraction form
    7,514.40/11,271.60 = 3,619.20/x
  3. Step 3: Cross multiply
    7,514.40x = 11,271.60 × 3,619.20
  4. Step 4: Simplify right side
    7,514.40x = 40,794,174.72
  5. Step 5: Solve for x
    x = 40,794,174.72/7,514.40
  6. Step 6: Final answer
    x = 5,428.80

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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.