Home / 8,138.51-12,197.50-6,488.27

Finding the Fourth Proportional to 8,138.51, 12,197.50 and 6,488.27

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Solution

The fourth proportional to 8,138.51, 12,197.50 and 6,488.27 is: 9,724.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.51 : 12,197.50 = 6,488.27 : x
  2. Step 2: Convert to fraction form
    8,138.51/12,197.50 = 6,488.27/x
  3. Step 3: Cross multiply
    8,138.51x = 12,197.50 × 6,488.27
  4. Step 4: Simplify right side
    8,138.51x = 79,140,673.33
  5. Step 5: Solve for x
    x = 79,140,673.33/8,138.51
  6. Step 6: Final answer
    x = 9,724.22

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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.