Home / 7,147.83-10,721.60-1,953.71

Finding the Fourth Proportional to 7,147.83, 10,721.60 and 1,953.71

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Solution

The fourth proportional to 7,147.83, 10,721.60 and 1,953.71 is: 2,930.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.83 : 10,721.60 = 1,953.71 : x
  2. Step 2: Convert to fraction form
    7,147.83/10,721.60 = 1,953.71/x
  3. Step 3: Cross multiply
    7,147.83x = 10,721.60 × 1,953.71
  4. Step 4: Simplify right side
    7,147.83x = 20,946,881.29
  5. Step 5: Solve for x
    x = 20,946,881.29/7,147.83
  6. Step 6: Final answer
    x = 2,930.52

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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.