Home / 5,378.81-7,420.61-3,284.15

Finding the Fourth Proportional to 5,378.81, 7,420.61 and 3,284.15

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Solution

The fourth proportional to 5,378.81, 7,420.61 and 3,284.15 is: 4,530.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.81 : 7,420.61 = 3,284.15 : x
  2. Step 2: Convert to fraction form
    5,378.81/7,420.61 = 3,284.15/x
  3. Step 3: Cross multiply
    5,378.81x = 7,420.61 × 3,284.15
  4. Step 4: Simplify right side
    5,378.81x = 24,370,367.44
  5. Step 5: Solve for x
    x = 24,370,367.44/5,378.81
  6. Step 6: Final answer
    x = 4,530.81

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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.