Home / 5,145.55-7,100.88-2,787.68

Finding the Fourth Proportional to 5,145.55, 7,100.88 and 2,787.68

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Solution

The fourth proportional to 5,145.55, 7,100.88 and 2,787.68 is: 3,847.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.55 : 7,100.88 = 2,787.68 : x
  2. Step 2: Convert to fraction form
    5,145.55/7,100.88 = 2,787.68/x
  3. Step 3: Cross multiply
    5,145.55x = 7,100.88 × 2,787.68
  4. Step 4: Simplify right side
    5,145.55x = 19,794,988.46
  5. Step 5: Solve for x
    x = 19,794,988.46/5,145.55
  6. Step 6: Final answer
    x = 3,847.01

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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.