Home / 5,219.39-7,818.64-3,138.27

Finding the Fourth Proportional to 5,219.39, 7,818.64 and 3,138.27

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Solution

The fourth proportional to 5,219.39, 7,818.64 and 3,138.27 is: 4,701.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.39 : 7,818.64 = 3,138.27 : x
  2. Step 2: Convert to fraction form
    5,219.39/7,818.64 = 3,138.27/x
  3. Step 3: Cross multiply
    5,219.39x = 7,818.64 × 3,138.27
  4. Step 4: Simplify right side
    5,219.39x = 24,537,003.35
  5. Step 5: Solve for x
    x = 24,537,003.35/5,219.39
  6. Step 6: Final answer
    x = 4,701.12

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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.