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Finding the Fourth Proportional to 3,156, 4,732.94 and 1,075.48

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Solution

The fourth proportional to 3,156, 4,732.94 and 1,075.48 is: 1,612.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156 : 4,732.94 = 1,075.48 : x
  2. Step 2: Convert to fraction form
    3,156/4,732.94 = 1,075.48/x
  3. Step 3: Cross multiply
    3,156x = 4,732.94 × 1,075.48
  4. Step 4: Simplify right side
    3,156x = 5,090,182.31
  5. Step 5: Solve for x
    x = 5,090,182.31/3,156
  6. Step 6: Final answer
    x = 1,612.86

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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.