Home / 12,642.31-18,962.79-3,877.26

Finding the Fourth Proportional to 12,642.31, 18,962.79 and 3,877.26

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Solution

The fourth proportional to 12,642.31, 18,962.79 and 3,877.26 is: 5,815.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.31 : 18,962.79 = 3,877.26 : x
  2. Step 2: Convert to fraction form
    12,642.31/18,962.79 = 3,877.26/x
  3. Step 3: Cross multiply
    12,642.31x = 18,962.79 × 3,877.26
  4. Step 4: Simplify right side
    12,642.31x = 73,523,667.16
  5. Step 5: Solve for x
    x = 73,523,667.16/12,642.31
  6. Step 6: Final answer
    x = 5,815.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.