Home / 5,145.66-7,101.02-2,787.80

Finding the Fourth Proportional to 5,145.66, 7,101.02 and 2,787.80

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Solution

The fourth proportional to 5,145.66, 7,101.02 and 2,787.80 is: 3,847.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.66 : 7,101.02 = 2,787.80 : x
  2. Step 2: Convert to fraction form
    5,145.66/7,101.02 = 2,787.80/x
  3. Step 3: Cross multiply
    5,145.66x = 7,101.02 × 2,787.80
  4. Step 4: Simplify right side
    5,145.66x = 19,796,174.11
  5. Step 5: Solve for x
    x = 19,796,174.11/5,145.66
  6. Step 6: Final answer
    x = 3,847.16

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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.