Home / 7,945.72-11,915.14-3,503.28

Finding the Fourth Proportional to 7,945.72, 11,915.14 and 3,503.28

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Solution

The fourth proportional to 7,945.72, 11,915.14 and 3,503.28 is: 5,253.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.72 : 11,915.14 = 3,503.28 : x
  2. Step 2: Convert to fraction form
    7,945.72/11,915.14 = 3,503.28/x
  3. Step 3: Cross multiply
    7,945.72x = 11,915.14 × 3,503.28
  4. Step 4: Simplify right side
    7,945.72x = 41,742,071.66
  5. Step 5: Solve for x
    x = 41,742,071.66/7,945.72
  6. Step 6: Final answer
    x = 5,253.40

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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.