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Finding the Fourth Proportional to 7,486.20, 11,213.10 and 4,019.40

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Solution

The fourth proportional to 7,486.20, 11,213.10 and 4,019.40 is: 6,020.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.20 : 11,213.10 = 4,019.40 : x
  2. Step 2: Convert to fraction form
    7,486.20/11,213.10 = 4,019.40/x
  3. Step 3: Cross multiply
    7,486.20x = 11,213.10 × 4,019.40
  4. Step 4: Simplify right side
    7,486.20x = 45,069,934.14
  5. Step 5: Solve for x
    x = 45,069,934.14/7,486.20
  6. Step 6: Final answer
    x = 6,020.40

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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.