Home / 7,143.21-10,718.46-3,247.11

Finding the Fourth Proportional to 7,143.21, 10,718.46 and 3,247.11

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Solution

The fourth proportional to 7,143.21, 10,718.46 and 3,247.11 is: 4,872.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.21 : 10,718.46 = 3,247.11 : x
  2. Step 2: Convert to fraction form
    7,143.21/10,718.46 = 3,247.11/x
  3. Step 3: Cross multiply
    7,143.21x = 10,718.46 × 3,247.11
  4. Step 4: Simplify right side
    7,143.21x = 34,804,018.65
  5. Step 5: Solve for x
    x = 34,804,018.65/7,143.21
  6. Step 6: Final answer
    x = 4,872.32

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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.