Home / 3,899,678.80-5,381,456.40-2,157,413.72

Finding the Fourth Proportional to 3,899,678.80, 5,381,456.40 and 2,157,413.72

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Solution

The fourth proportional to 3,899,678.80, 5,381,456.40 and 2,157,413.72 is: 2,977,175.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899,678.80 : 5,381,456.40 = 2,157,413.72 : x
  2. Step 2: Convert to fraction form
    3,899,678.80/5,381,456.40 = 2,157,413.72/x
  3. Step 3: Cross multiply
    3,899,678.80x = 5,381,456.40 × 2,157,413.72
  4. Step 4: Simplify right side
    3,899,678.80x = 11,610,027,870,941.81
  5. Step 5: Solve for x
    x = 11,610,027,870,941.81/3,899,678.80
  6. Step 6: Final answer
    x = 2,977,175.42

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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.