Home / 7,133.81-10,700.75-1,939.69

Finding the Fourth Proportional to 7,133.81, 10,700.75 and 1,939.69

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Solution

The fourth proportional to 7,133.81, 10,700.75 and 1,939.69 is: 2,909.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,133.81 : 10,700.75 = 1,939.69 : x
  2. Step 2: Convert to fraction form
    7,133.81/10,700.75 = 1,939.69/x
  3. Step 3: Cross multiply
    7,133.81x = 10,700.75 × 1,939.69
  4. Step 4: Simplify right side
    7,133.81x = 20,756,115.86
  5. Step 5: Solve for x
    x = 20,756,115.86/7,133.81
  6. Step 6: Final answer
    x = 2,909.54

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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.