Home / 5,145.12-7,710.96-2,069.28

Finding the Fourth Proportional to 5,145.12, 7,710.96 and 2,069.28

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Solution

The fourth proportional to 5,145.12, 7,710.96 and 2,069.28 is: 3,101.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.12 : 7,710.96 = 2,069.28 : x
  2. Step 2: Convert to fraction form
    5,145.12/7,710.96 = 2,069.28/x
  3. Step 3: Cross multiply
    5,145.12x = 7,710.96 × 2,069.28
  4. Step 4: Simplify right side
    5,145.12x = 15,956,135.31
  5. Step 5: Solve for x
    x = 15,956,135.31/5,145.12
  6. Step 6: Final answer
    x = 3,101.22

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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.