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Finding the Fourth Proportional to 2,893.61, 3,989.21 and 1,830.84

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Solution

The fourth proportional to 2,893.61, 3,989.21 and 1,830.84 is: 2,524.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,893.61 : 3,989.21 = 1,830.84 : x
  2. Step 2: Convert to fraction form
    2,893.61/3,989.21 = 1,830.84/x
  3. Step 3: Cross multiply
    2,893.61x = 3,989.21 × 1,830.84
  4. Step 4: Simplify right side
    2,893.61x = 7,303,596.08
  5. Step 5: Solve for x
    x = 7,303,596.08/2,893.61
  6. Step 6: Final answer
    x = 2,524.05

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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.