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Finding the Fourth Proportional to 7,060.88, 9,744.64 and 3,917.68

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Solution

The fourth proportional to 7,060.88, 9,744.64 and 3,917.68 is: 5,406.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,060.88 : 9,744.64 = 3,917.68 : x
  2. Step 2: Convert to fraction form
    7,060.88/9,744.64 = 3,917.68/x
  3. Step 3: Cross multiply
    7,060.88x = 9,744.64 × 3,917.68
  4. Step 4: Simplify right side
    7,060.88x = 38,176,381.24
  5. Step 5: Solve for x
    x = 38,176,381.24/7,060.88
  6. Step 6: Final answer
    x = 5,406.75

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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.