Home / 5,421.39-7,483.28-3,183.21

Finding the Fourth Proportional to 5,421.39, 7,483.28 and 3,183.21

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Solution

The fourth proportional to 5,421.39, 7,483.28 and 3,183.21 is: 4,393.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.39 : 7,483.28 = 3,183.21 : x
  2. Step 2: Convert to fraction form
    5,421.39/7,483.28 = 3,183.21/x
  3. Step 3: Cross multiply
    5,421.39x = 7,483.28 × 3,183.21
  4. Step 4: Simplify right side
    5,421.39x = 23,820,835.81
  5. Step 5: Solve for x
    x = 23,820,835.81/5,421.39
  6. Step 6: Final answer
    x = 4,393.86

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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.