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Finding the Fourth Proportional to 3,019.61, 4,530.02 and 1,787.90

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Solution

The fourth proportional to 3,019.61, 4,530.02 and 1,787.90 is: 2,682.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,019.61 : 4,530.02 = 1,787.90 : x
  2. Step 2: Convert to fraction form
    3,019.61/4,530.02 = 1,787.90/x
  3. Step 3: Cross multiply
    3,019.61x = 4,530.02 × 1,787.90
  4. Step 4: Simplify right side
    3,019.61x = 8,099,222.76
  5. Step 5: Solve for x
    x = 8,099,222.76/3,019.61
  6. Step 6: Final answer
    x = 2,682.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.