Home / 8,069.79-12,101.64-3,138.81

Finding the Fourth Proportional to 8,069.79, 12,101.64 and 3,138.81

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Solution

The fourth proportional to 8,069.79, 12,101.64 and 3,138.81 is: 4,707.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,069.79 : 12,101.64 = 3,138.81 : x
  2. Step 2: Convert to fraction form
    8,069.79/12,101.64 = 3,138.81/x
  3. Step 3: Cross multiply
    8,069.79x = 12,101.64 × 3,138.81
  4. Step 4: Simplify right side
    8,069.79x = 37,984,748.65
  5. Step 5: Solve for x
    x = 37,984,748.65/8,069.79
  6. Step 6: Final answer
    x = 4,707.03

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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.