Home / 5,090.39-7,635.75-2,421.42

Finding the Fourth Proportional to 5,090.39, 7,635.75 and 2,421.42

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Solution

The fourth proportional to 5,090.39, 7,635.75 and 2,421.42 is: 3,632.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090.39 : 7,635.75 = 2,421.42 : x
  2. Step 2: Convert to fraction form
    5,090.39/7,635.75 = 2,421.42/x
  3. Step 3: Cross multiply
    5,090.39x = 7,635.75 × 2,421.42
  4. Step 4: Simplify right side
    5,090.39x = 18,489,357.77
  5. Step 5: Solve for x
    x = 18,489,357.77/5,090.39
  6. Step 6: Final answer
    x = 3,632.21

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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.