Home / 2,987.96-4,124.10-1,729.73

Finding the Fourth Proportional to 2,987.96, 4,124.10 and 1,729.73

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Solution

The fourth proportional to 2,987.96, 4,124.10 and 1,729.73 is: 2,387.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.96 : 4,124.10 = 1,729.73 : x
  2. Step 2: Convert to fraction form
    2,987.96/4,124.10 = 1,729.73/x
  3. Step 3: Cross multiply
    2,987.96x = 4,124.10 × 1,729.73
  4. Step 4: Simplify right side
    2,987.96x = 7,133,579.49
  5. Step 5: Solve for x
    x = 7,133,579.49/2,987.96
  6. Step 6: Final answer
    x = 2,387.44

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1.5x scale

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.