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Finding the Fourth Proportional to 3,612.94, 4,985.58 and 2,019.58

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Solution

The fourth proportional to 3,612.94, 4,985.58 and 2,019.58 is: 2,786.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.94 : 4,985.58 = 2,019.58 : x
  2. Step 2: Convert to fraction form
    3,612.94/4,985.58 = 2,019.58/x
  3. Step 3: Cross multiply
    3,612.94x = 4,985.58 × 2,019.58
  4. Step 4: Simplify right side
    3,612.94x = 10,068,777.66
  5. Step 5: Solve for x
    x = 10,068,777.66/3,612.94
  6. Step 6: Final answer
    x = 2,786.87

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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.