Home / 2,987.66-4,124.58-1,994.42

Finding the Fourth Proportional to 2,987.66, 4,124.58 and 1,994.42

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Solution

The fourth proportional to 2,987.66, 4,124.58 and 1,994.42 is: 2,753.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.66 : 4,124.58 = 1,994.42 : x
  2. Step 2: Convert to fraction form
    2,987.66/4,124.58 = 1,994.42/x
  3. Step 3: Cross multiply
    2,987.66x = 4,124.58 × 1,994.42
  4. Step 4: Simplify right side
    2,987.66x = 8,226,144.84
  5. Step 5: Solve for x
    x = 8,226,144.84/2,987.66
  6. Step 6: Final answer
    x = 2,753.37

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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.