Home / 7,143.72-10,719.22-3,247.64

Finding the Fourth Proportional to 7,143.72, 10,719.22 and 3,247.64

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Solution

The fourth proportional to 7,143.72, 10,719.22 and 3,247.64 is: 4,873.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.72 : 10,719.22 = 3,247.64 : x
  2. Step 2: Convert to fraction form
    7,143.72/10,719.22 = 3,247.64/x
  3. Step 3: Cross multiply
    7,143.72x = 10,719.22 × 3,247.64
  4. Step 4: Simplify right side
    7,143.72x = 34,812,167.64
  5. Step 5: Solve for x
    x = 34,812,167.64/7,143.72
  6. Step 6: Final answer
    x = 4,873.11

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1.5x scale

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.