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Finding the Fourth Proportional to 4,285.94, 6,428.81 and 1,977.44

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Solution

The fourth proportional to 4,285.94, 6,428.81 and 1,977.44 is: 2,966.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285.94 : 6,428.81 = 1,977.44 : x
  2. Step 2: Convert to fraction form
    4,285.94/6,428.81 = 1,977.44/x
  3. Step 3: Cross multiply
    4,285.94x = 6,428.81 × 1,977.44
  4. Step 4: Simplify right side
    4,285.94x = 12,712,544.02
  5. Step 5: Solve for x
    x = 12,712,544.02/4,285.94
  6. Step 6: Final answer
    x = 2,966.11

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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.