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Finding the Fourth Proportional to 7,243.76, 9,996.63 and 4,259.87

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Solution

The fourth proportional to 7,243.76, 9,996.63 and 4,259.87 is: 5,878.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243.76 : 9,996.63 = 4,259.87 : x
  2. Step 2: Convert to fraction form
    7,243.76/9,996.63 = 4,259.87/x
  3. Step 3: Cross multiply
    7,243.76x = 9,996.63 × 4,259.87
  4. Step 4: Simplify right side
    7,243.76x = 42,584,322.94
  5. Step 5: Solve for x
    x = 42,584,322.94/7,243.76
  6. Step 6: Final answer
    x = 5,878.76

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1.5x scale

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.