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Finding the Fourth Proportional to 7,135.81, 10,707.94 and 3,975.90

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Solution

The fourth proportional to 7,135.81, 10,707.94 and 3,975.90 is: 5,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.81 : 10,707.94 = 3,975.90 : x
  2. Step 2: Convert to fraction form
    7,135.81/10,707.94 = 3,975.90/x
  3. Step 3: Cross multiply
    7,135.81x = 10,707.94 × 3,975.90
  4. Step 4: Simplify right side
    7,135.81x = 42,573,645.11
  5. Step 5: Solve for x
    x = 42,573,645.11/7,135.81
  6. Step 6: Final answer
    x = 5,966.20

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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.