Home / 7,145.21-10,719.18-2,531.45

Finding the Fourth Proportional to 7,145.21, 10,719.18 and 2,531.45

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Solution

The fourth proportional to 7,145.21, 10,719.18 and 2,531.45 is: 3,797.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.21 : 10,719.18 = 2,531.45 : x
  2. Step 2: Convert to fraction form
    7,145.21/10,719.18 = 2,531.45/x
  3. Step 3: Cross multiply
    7,145.21x = 10,719.18 × 2,531.45
  4. Step 4: Simplify right side
    7,145.21x = 27,135,055.55
  5. Step 5: Solve for x
    x = 27,135,055.55/7,145.21
  6. Step 6: Final answer
    x = 3,797.66

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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.