Home / 7,412.48-11,118.60-3,519.68

Finding the Fourth Proportional to 7,412.48, 11,118.60 and 3,519.68

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Solution

The fourth proportional to 7,412.48, 11,118.60 and 3,519.68 is: 5,279.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412.48 : 11,118.60 = 3,519.68 : x
  2. Step 2: Convert to fraction form
    7,412.48/11,118.60 = 3,519.68/x
  3. Step 3: Cross multiply
    7,412.48x = 11,118.60 × 3,519.68
  4. Step 4: Simplify right side
    7,412.48x = 39,133,914.05
  5. Step 5: Solve for x
    x = 39,133,914.05/7,412.48
  6. Step 6: Final answer
    x = 5,279.46

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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.