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Finding the Fourth Proportional to 7,918.52, 11,905.12 and 7,710.76

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Solution

The fourth proportional to 7,918.52, 11,905.12 and 7,710.76 is: 11,592.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.52 : 11,905.12 = 7,710.76 : x
  2. Step 2: Convert to fraction form
    7,918.52/11,905.12 = 7,710.76/x
  3. Step 3: Cross multiply
    7,918.52x = 11,905.12 × 7,710.76
  4. Step 4: Simplify right side
    7,918.52x = 91,797,463.57
  5. Step 5: Solve for x
    x = 91,797,463.57/7,918.52
  6. Step 6: Final answer
    x = 11,592.76

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1.5x scale

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.