Home / 8,253.78-11,390.82-5,111.76

Finding the Fourth Proportional to 8,253.78, 11,390.82 and 5,111.76

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Solution

The fourth proportional to 8,253.78, 11,390.82 and 5,111.76 is: 7,054.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,253.78 : 11,390.82 = 5,111.76 : x
  2. Step 2: Convert to fraction form
    8,253.78/11,390.82 = 5,111.76/x
  3. Step 3: Cross multiply
    8,253.78x = 11,390.82 × 5,111.76
  4. Step 4: Simplify right side
    8,253.78x = 58,227,138.04
  5. Step 5: Solve for x
    x = 58,227,138.04/8,253.78
  6. Step 6: Final answer
    x = 7,054.60

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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.