Home / 8,729.46-12,045.67-5,144.18

Finding the Fourth Proportional to 8,729.46, 12,045.67 and 5,144.18

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Solution

The fourth proportional to 8,729.46, 12,045.67 and 5,144.18 is: 7,098.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.46 : 12,045.67 = 5,144.18 : x
  2. Step 2: Convert to fraction form
    8,729.46/12,045.67 = 5,144.18/x
  3. Step 3: Cross multiply
    8,729.46x = 12,045.67 × 5,144.18
  4. Step 4: Simplify right side
    8,729.46x = 61,965,137.68
  5. Step 5: Solve for x
    x = 61,965,137.68/8,729.46
  6. Step 6: Final answer
    x = 7,098.40

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1.5x scale

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.