Home / 5,378.81-7,421.96-3,020.49

Finding the Fourth Proportional to 5,378.81, 7,421.96 and 3,020.49

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Solution

The fourth proportional to 5,378.81, 7,421.96 and 3,020.49 is: 4,167.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.81 : 7,421.96 = 3,020.49 : x
  2. Step 2: Convert to fraction form
    5,378.81/7,421.96 = 3,020.49/x
  3. Step 3: Cross multiply
    5,378.81x = 7,421.96 × 3,020.49
  4. Step 4: Simplify right side
    5,378.81x = 22,417,940.86
  5. Step 5: Solve for x
    x = 22,417,940.86/5,378.81
  6. Step 6: Final answer
    x = 4,167.83

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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.