Home / 3,870,910.38-5,341,877.10-2,128,692.12

Finding the Fourth Proportional to 3,870,910.38, 5,341,877.10 and 2,128,692.12

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Solution

The fourth proportional to 3,870,910.38, 5,341,877.10 and 2,128,692.12 is: 2,937,606.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870,910.38 : 5,341,877.10 = 2,128,692.12 : x
  2. Step 2: Convert to fraction form
    3,870,910.38/5,341,877.10 = 2,128,692.12/x
  3. Step 3: Cross multiply
    3,870,910.38x = 5,341,877.10 × 2,128,692.12
  4. Step 4: Simplify right side
    3,870,910.38x = 11,371,211,688,778.45
  5. Step 5: Solve for x
    x = 11,371,211,688,778.45/3,870,910.38
  6. Step 6: Final answer
    x = 2,937,606.55

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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.