Home / 7,870.85-11,814.47-3,491.38

Finding the Fourth Proportional to 7,870.85, 11,814.47 and 3,491.38

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Solution

The fourth proportional to 7,870.85, 11,814.47 and 3,491.38 is: 5,240.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,870.85 : 11,814.47 = 3,491.38 : x
  2. Step 2: Convert to fraction form
    7,870.85/11,814.47 = 3,491.38/x
  3. Step 3: Cross multiply
    7,870.85x = 11,814.47 × 3,491.38
  4. Step 4: Simplify right side
    7,870.85x = 41,248,804.27
  5. Step 5: Solve for x
    x = 41,248,804.27/7,870.85
  6. Step 6: Final answer
    x = 5,240.71

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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.