Home / 8,140.14-12,212.34-3,460.32

Finding the Fourth Proportional to 8,140.14, 12,212.34 and 3,460.32

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Solution

The fourth proportional to 8,140.14, 12,212.34 and 3,460.32 is: 5,191.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.14 : 12,212.34 = 3,460.32 : x
  2. Step 2: Convert to fraction form
    8,140.14/12,212.34 = 3,460.32/x
  3. Step 3: Cross multiply
    8,140.14x = 12,212.34 × 3,460.32
  4. Step 4: Simplify right side
    8,140.14x = 42,258,604.35
  5. Step 5: Solve for x
    x = 42,258,604.35/8,140.14
  6. Step 6: Final answer
    x = 5,191.39

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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.