Home / 8,100.18-12,122.73-5,137.20

Finding the Fourth Proportional to 8,100.18, 12,122.73 and 5,137.20

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Solution

The fourth proportional to 8,100.18, 12,122.73 and 5,137.20 is: 7,688.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,100.18 : 12,122.73 = 5,137.20 : x
  2. Step 2: Convert to fraction form
    8,100.18/12,122.73 = 5,137.20/x
  3. Step 3: Cross multiply
    8,100.18x = 12,122.73 × 5,137.20
  4. Step 4: Simplify right side
    8,100.18x = 62,276,888.56
  5. Step 5: Solve for x
    x = 62,276,888.56/8,100.18
  6. Step 6: Final answer
    x = 7,688.33

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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.