Home / 7,121.13-10,685.53-2,964.01

Finding the Fourth Proportional to 7,121.13, 10,685.53 and 2,964.01

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Solution

The fourth proportional to 7,121.13, 10,685.53 and 2,964.01 is: 4,447.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.13 : 10,685.53 = 2,964.01 : x
  2. Step 2: Convert to fraction form
    7,121.13/10,685.53 = 2,964.01/x
  3. Step 3: Cross multiply
    7,121.13x = 10,685.53 × 2,964.01
  4. Step 4: Simplify right side
    7,121.13x = 31,672,017.78
  5. Step 5: Solve for x
    x = 31,672,017.78/7,121.13
  6. Step 6: Final answer
    x = 4,447.61

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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.