Home / 3,871,612.20-5,342,885.94-2,129,357.28

Finding the Fourth Proportional to 3,871,612.20, 5,342,885.94 and 2,129,357.28

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Solution

The fourth proportional to 3,871,612.20, 5,342,885.94 and 2,129,357.28 is: 2,938,546.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871,612.20 : 5,342,885.94 = 2,129,357.28 : x
  2. Step 2: Convert to fraction form
    3,871,612.20/5,342,885.94 = 2,129,357.28/x
  3. Step 3: Cross multiply
    3,871,612.20x = 5,342,885.94 × 2,129,357.28
  4. Step 4: Simplify right side
    3,871,612.20x = 11,376,913,072,548.64
  5. Step 5: Solve for x
    x = 11,376,913,072,548.64/3,871,612.20
  6. Step 6: Final answer
    x = 2,938,546.65

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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.