Home / 7,147.26-10,721.46-1,953

Finding the Fourth Proportional to 7,147.26, 10,721.46 and 1,953

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Solution

The fourth proportional to 7,147.26, 10,721.46 and 1,953 is: 2,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.26 : 10,721.46 = 1,953 : x
  2. Step 2: Convert to fraction form
    7,147.26/10,721.46 = 1,953/x
  3. Step 3: Cross multiply
    7,147.26x = 10,721.46 × 1,953
  4. Step 4: Simplify right side
    7,147.26x = 20,939,011.38
  5. Step 5: Solve for x
    x = 20,939,011.38/7,147.26
  6. Step 6: Final answer
    x = 2,929.66

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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.