Home / 7,145.08-10,704.66-6,989.56

Finding the Fourth Proportional to 7,145.08, 10,704.66 and 6,989.56

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Solution

The fourth proportional to 7,145.08, 10,704.66 and 6,989.56 is: 10,471.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.08 : 10,704.66 = 6,989.56 : x
  2. Step 2: Convert to fraction form
    7,145.08/10,704.66 = 6,989.56/x
  3. Step 3: Cross multiply
    7,145.08x = 10,704.66 × 6,989.56
  4. Step 4: Simplify right side
    7,145.08x = 74,820,863.35
  5. Step 5: Solve for x
    x = 74,820,863.35/7,145.08
  6. Step 6: Final answer
    x = 10,471.66

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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.