Home / 8,137.40-12,206.16-5,328.60

Finding the Fourth Proportional to 8,137.40, 12,206.16 and 5,328.60

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Solution

The fourth proportional to 8,137.40, 12,206.16 and 5,328.60 is: 7,992.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,137.40 : 12,206.16 = 5,328.60 : x
  2. Step 2: Convert to fraction form
    8,137.40/12,206.16 = 5,328.60/x
  3. Step 3: Cross multiply
    8,137.40x = 12,206.16 × 5,328.60
  4. Step 4: Simplify right side
    8,137.40x = 65,041,744.18
  5. Step 5: Solve for x
    x = 65,041,744.18/8,137.40
  6. Step 6: Final answer
    x = 7,992.94

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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.