Home / 8,126.19-11,211.89-5,143.30

Finding the Fourth Proportional to 8,126.19, 11,211.89 and 5,143.30

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Solution

The fourth proportional to 8,126.19, 11,211.89 and 5,143.30 is: 7,096.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.19 : 11,211.89 = 5,143.30 : x
  2. Step 2: Convert to fraction form
    8,126.19/11,211.89 = 5,143.30/x
  3. Step 3: Cross multiply
    8,126.19x = 11,211.89 × 5,143.30
  4. Step 4: Simplify right side
    8,126.19x = 57,666,060.09
  5. Step 5: Solve for x
    x = 57,666,060.09/8,126.19
  6. Step 6: Final answer
    x = 7,096.32

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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.