Home / 9,101.28-13,669.20-7,788

Finding the Fourth Proportional to 9,101.28, 13,669.20 and 7,788

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Solution

The fourth proportional to 9,101.28, 13,669.20 and 7,788 is: 11,696.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,101.28 : 13,669.20 = 7,788 : x
  2. Step 2: Convert to fraction form
    9,101.28/13,669.20 = 7,788/x
  3. Step 3: Cross multiply
    9,101.28x = 13,669.20 × 7,788
  4. Step 4: Simplify right side
    9,101.28x = 106,455,729.60
  5. Step 5: Solve for x
    x = 106,455,729.60/9,101.28
  6. Step 6: Final answer
    x = 11,696.79

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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.