Home / 9,711.75-13,402.23-5,520

Finding the Fourth Proportional to 9,711.75, 13,402.23 and 5,520

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Solution

The fourth proportional to 9,711.75, 13,402.23 and 5,520 is: 7,617.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,711.75 : 13,402.23 = 5,520 : x
  2. Step 2: Convert to fraction form
    9,711.75/13,402.23 = 5,520/x
  3. Step 3: Cross multiply
    9,711.75x = 13,402.23 × 5,520
  4. Step 4: Simplify right side
    9,711.75x = 73,980,309.60
  5. Step 5: Solve for x
    x = 73,980,309.60/9,711.75
  6. Step 6: Final answer
    x = 7,617.61

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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.