Home / 3,900,720.32-5,383,013.51-2,181,840.84

Finding the Fourth Proportional to 3,900,720.32, 5,383,013.51 and 2,181,840.84

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Solution

The fourth proportional to 3,900,720.32, 5,383,013.51 and 2,181,840.84 is: 3,010,951.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900,720.32 : 5,383,013.51 = 2,181,840.84 : x
  2. Step 2: Convert to fraction form
    3,900,720.32/5,383,013.51 = 2,181,840.84/x
  3. Step 3: Cross multiply
    3,900,720.32x = 5,383,013.51 × 2,181,840.84
  4. Step 4: Simplify right side
    3,900,720.32x = 11,744,878,707,480.54
  5. Step 5: Solve for x
    x = 11,744,878,707,480.54/3,900,720.32
  6. Step 6: Final answer
    x = 3,010,951.25

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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.