Home / 9,321.51-12,863.96-5,072.85

Finding the Fourth Proportional to 9,321.51, 12,863.96 and 5,072.85

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Solution

The fourth proportional to 9,321.51, 12,863.96 and 5,072.85 is: 7,000.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.51 : 12,863.96 = 5,072.85 : x
  2. Step 2: Convert to fraction form
    9,321.51/12,863.96 = 5,072.85/x
  3. Step 3: Cross multiply
    9,321.51x = 12,863.96 × 5,072.85
  4. Step 4: Simplify right side
    9,321.51x = 65,256,870.64
  5. Step 5: Solve for x
    x = 65,256,870.64/9,321.51
  6. Step 6: Final answer
    x = 7,000.68

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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.