Home / 2,121,331.21-2,928,901.62-1,985,813.76

Finding the Fourth Proportional to 2,121,331.21, 2,928,901.62 and 1,985,813.76

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Solution

The fourth proportional to 2,121,331.21, 2,928,901.62 and 1,985,813.76 is: 2,741,793.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121,331.21 : 2,928,901.62 = 1,985,813.76 : x
  2. Step 2: Convert to fraction form
    2,121,331.21/2,928,901.62 = 1,985,813.76/x
  3. Step 3: Cross multiply
    2,121,331.21x = 2,928,901.62 × 1,985,813.76
  4. Step 4: Simplify right side
    2,121,331.21x = 5,816,253,138,682.29
  5. Step 5: Solve for x
    x = 5,816,253,138,682.29/2,121,331.21
  6. Step 6: Final answer
    x = 2,741,793.98

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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.