Home / 7,147.53-10,721.30-1,953.81

Finding the Fourth Proportional to 7,147.53, 10,721.30 and 1,953.81

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Solution

The fourth proportional to 7,147.53, 10,721.30 and 1,953.81 is: 2,930.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.53 : 10,721.30 = 1,953.81 : x
  2. Step 2: Convert to fraction form
    7,147.53/10,721.30 = 1,953.81/x
  3. Step 3: Cross multiply
    7,147.53x = 10,721.30 × 1,953.81
  4. Step 4: Simplify right side
    7,147.53x = 20,947,373.38
  5. Step 5: Solve for x
    x = 20,947,373.38/7,147.53
  6. Step 6: Final answer
    x = 2,930.72

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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.