Home / 3,931,286.78-5,424,278.16-2,211,779.90

Finding the Fourth Proportional to 3,931,286.78, 5,424,278.16 and 2,211,779.90

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Solution

The fourth proportional to 3,931,286.78, 5,424,278.16 and 2,211,779.90 is: 3,051,751.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931,286.78 : 5,424,278.16 = 2,211,779.90 : x
  2. Step 2: Convert to fraction form
    3,931,286.78/5,424,278.16 = 2,211,779.90/x
  3. Step 3: Cross multiply
    3,931,286.78x = 5,424,278.16 × 2,211,779.90
  4. Step 4: Simplify right side
    3,931,286.78x = 11,997,309,406,296.98
  5. Step 5: Solve for x
    x = 11,997,309,406,296.98/3,931,286.78
  6. Step 6: Final answer
    x = 3,051,751.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.