Home / 3,871,898.30-5,343,372.09-2,129,729.78

Finding the Fourth Proportional to 3,871,898.30, 5,343,372.09 and 2,129,729.78

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Solution

The fourth proportional to 3,871,898.30, 5,343,372.09 and 2,129,729.78 is: 2,939,110.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871,898.30 : 5,343,372.09 = 2,129,729.78 : x
  2. Step 2: Convert to fraction form
    3,871,898.30/5,343,372.09 = 2,129,729.78/x
  3. Step 3: Cross multiply
    3,871,898.30x = 5,343,372.09 × 2,129,729.78
  4. Step 4: Simplify right side
    3,871,898.30x = 11,379,938,638,976.98
  5. Step 5: Solve for x
    x = 11,379,938,638,976.98/3,871,898.30
  6. Step 6: Final answer
    x = 2,939,110.94

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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.