Home / 7,431.09-11,143.40-2,810.85

Finding the Fourth Proportional to 7,431.09, 11,143.40 and 2,810.85

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Solution

The fourth proportional to 7,431.09, 11,143.40 and 2,810.85 is: 4,215.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.09 : 11,143.40 = 2,810.85 : x
  2. Step 2: Convert to fraction form
    7,431.09/11,143.40 = 2,810.85/x
  3. Step 3: Cross multiply
    7,431.09x = 11,143.40 × 2,810.85
  4. Step 4: Simplify right side
    7,431.09x = 31,322,429.28
  5. Step 5: Solve for x
    x = 31,322,429.28/7,431.09
  6. Step 6: Final answer
    x = 4,215.05

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Double scale
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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.