Home / 5,378.30-7,421.26-3,019.99

Finding the Fourth Proportional to 5,378.30, 7,421.26 and 3,019.99

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Solution

The fourth proportional to 5,378.30, 7,421.26 and 3,019.99 is: 4,167.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.30 : 7,421.26 = 3,019.99 : x
  2. Step 2: Convert to fraction form
    5,378.30/7,421.26 = 3,019.99/x
  3. Step 3: Cross multiply
    5,378.30x = 7,421.26 × 3,019.99
  4. Step 4: Simplify right side
    5,378.30x = 22,412,093.88
  5. Step 5: Solve for x
    x = 22,412,093.88/5,378.30
  6. Step 6: Final answer
    x = 4,167.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.