Home / 10,439.07-15,658.56-2,647.86

Finding the Fourth Proportional to 10,439.07, 15,658.56 and 2,647.86

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Solution

The fourth proportional to 10,439.07, 15,658.56 and 2,647.86 is: 3,971.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,439.07 : 15,658.56 = 2,647.86 : x
  2. Step 2: Convert to fraction form
    10,439.07/15,658.56 = 2,647.86/x
  3. Step 3: Cross multiply
    10,439.07x = 15,658.56 × 2,647.86
  4. Step 4: Simplify right side
    10,439.07x = 41,461,674.68
  5. Step 5: Solve for x
    x = 41,461,674.68/10,439.07
  6. Step 6: Final answer
    x = 3,971.78

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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.