Home / 3,938,349.55-5,434,788.02-2,172,317.84

Finding the Fourth Proportional to 3,938,349.55, 5,434,788.02 and 2,172,317.84

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Solution

The fourth proportional to 3,938,349.55, 5,434,788.02 and 2,172,317.84 is: 2,997,724.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938,349.55 : 5,434,788.02 = 2,172,317.84 : x
  2. Step 2: Convert to fraction form
    3,938,349.55/5,434,788.02 = 2,172,317.84/x
  3. Step 3: Cross multiply
    3,938,349.55x = 5,434,788.02 × 2,172,317.84
  4. Step 4: Simplify right side
    3,938,349.55x = 11,806,086,975,189.66
  5. Step 5: Solve for x
    x = 11,806,086,975,189.66/3,938,349.55
  6. Step 6: Final answer
    x = 2,997,724.51

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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.