Home / 7,120.55-10,681.36-1,926.38

Finding the Fourth Proportional to 7,120.55, 10,681.36 and 1,926.38

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Solution

The fourth proportional to 7,120.55, 10,681.36 and 1,926.38 is: 2,889.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.55 : 10,681.36 = 1,926.38 : x
  2. Step 2: Convert to fraction form
    7,120.55/10,681.36 = 1,926.38/x
  3. Step 3: Cross multiply
    7,120.55x = 10,681.36 × 1,926.38
  4. Step 4: Simplify right side
    7,120.55x = 20,576,300.05
  5. Step 5: Solve for x
    x = 20,576,300.05/7,120.55
  6. Step 6: Final answer
    x = 2,889.71

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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.