Home / 8,140.46-12,212.56-3,460.68

Finding the Fourth Proportional to 8,140.46, 12,212.56 and 3,460.68

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Solution

The fourth proportional to 8,140.46, 12,212.56 and 3,460.68 is: 5,191.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.46 : 12,212.56 = 3,460.68 : x
  2. Step 2: Convert to fraction form
    8,140.46/12,212.56 = 3,460.68/x
  3. Step 3: Cross multiply
    8,140.46x = 12,212.56 × 3,460.68
  4. Step 4: Simplify right side
    8,140.46x = 42,263,762.14
  5. Step 5: Solve for x
    x = 42,263,762.14/8,140.46
  6. Step 6: Final answer
    x = 5,191.81

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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.