Home / 1,987.38-2,739.96-1,671.48

Finding the Fourth Proportional to 1,987.38, 2,739.96 and 1,671.48

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Solution

The fourth proportional to 1,987.38, 2,739.96 and 1,671.48 is: 2,304.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.38 : 2,739.96 = 1,671.48 : x
  2. Step 2: Convert to fraction form
    1,987.38/2,739.96 = 1,671.48/x
  3. Step 3: Cross multiply
    1,987.38x = 2,739.96 × 1,671.48
  4. Step 4: Simplify right side
    1,987.38x = 4,579,788.34
  5. Step 5: Solve for x
    x = 4,579,788.34/1,987.38
  6. Step 6: Final answer
    x = 2,304.44

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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.