Home / 3,890,961.92-5,369,438.16-2,172,242.40

Finding the Fourth Proportional to 3,890,961.92, 5,369,438.16 and 2,172,242.40

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Solution

The fourth proportional to 3,890,961.92, 5,369,438.16 and 2,172,242.40 is: 2,997,644.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890,961.92 : 5,369,438.16 = 2,172,242.40 : x
  2. Step 2: Convert to fraction form
    3,890,961.92/5,369,438.16 = 2,172,242.40/x
  3. Step 3: Cross multiply
    3,890,961.92x = 5,369,438.16 × 2,172,242.40
  4. Step 4: Simplify right side
    3,890,961.92x = 11,663,721,235,329.98
  5. Step 5: Solve for x
    x = 11,663,721,235,329.98/3,890,961.92
  6. Step 6: Final answer
    x = 2,997,644.66

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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.