Home / 7,122.81-10,685.57-2,960.56

Finding the Fourth Proportional to 7,122.81, 10,685.57 and 2,960.56

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Solution

The fourth proportional to 7,122.81, 10,685.57 and 2,960.56 is: 4,441.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.81 : 10,685.57 = 2,960.56 : x
  2. Step 2: Convert to fraction form
    7,122.81/10,685.57 = 2,960.56/x
  3. Step 3: Cross multiply
    7,122.81x = 10,685.57 × 2,960.56
  4. Step 4: Simplify right side
    7,122.81x = 31,635,271.12
  5. Step 5: Solve for x
    x = 31,635,271.12/7,122.81
  6. Step 6: Final answer
    x = 4,441.40

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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.