Home / 9,388.63-12,956.19-5,139.76

Finding the Fourth Proportional to 9,388.63, 12,956.19 and 5,139.76

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Solution

The fourth proportional to 9,388.63, 12,956.19 and 5,139.76 is: 7,092.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,388.63 : 12,956.19 = 5,139.76 : x
  2. Step 2: Convert to fraction form
    9,388.63/12,956.19 = 5,139.76/x
  3. Step 3: Cross multiply
    9,388.63x = 12,956.19 × 5,139.76
  4. Step 4: Simplify right side
    9,388.63x = 66,591,707.11
  5. Step 5: Solve for x
    x = 66,591,707.11/9,388.63
  6. Step 6: Final answer
    x = 7,092.80

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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.