Home / 5,427.15-8,127.75-2,787.72

Finding the Fourth Proportional to 5,427.15, 8,127.75 and 2,787.72

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Solution

The fourth proportional to 5,427.15, 8,127.75 and 2,787.72 is: 4,174.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.15 : 8,127.75 = 2,787.72 : x
  2. Step 2: Convert to fraction form
    5,427.15/8,127.75 = 2,787.72/x
  3. Step 3: Cross multiply
    5,427.15x = 8,127.75 × 2,787.72
  4. Step 4: Simplify right side
    5,427.15x = 22,657,891.23
  5. Step 5: Solve for x
    x = 22,657,891.23/5,427.15
  6. Step 6: Final answer
    x = 4,174.92

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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.