Home / 10,640.78-15,968.44-3,715.28

Finding the Fourth Proportional to 10,640.78, 15,968.44 and 3,715.28

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Solution

The fourth proportional to 10,640.78, 15,968.44 and 3,715.28 is: 5,575.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640.78 : 15,968.44 = 3,715.28 : x
  2. Step 2: Convert to fraction form
    10,640.78/15,968.44 = 3,715.28/x
  3. Step 3: Cross multiply
    10,640.78x = 15,968.44 × 3,715.28
  4. Step 4: Simplify right side
    10,640.78x = 59,327,225.76
  5. Step 5: Solve for x
    x = 59,327,225.76/10,640.78
  6. Step 6: Final answer
    x = 5,575.46

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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.