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Finding the Fourth Proportional to 5,296.88, 7,309.81 and 2,939.18

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Solution

The fourth proportional to 5,296.88, 7,309.81 and 2,939.18 is: 4,056.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,296.88 : 7,309.81 = 2,939.18 : x
  2. Step 2: Convert to fraction form
    5,296.88/7,309.81 = 2,939.18/x
  3. Step 3: Cross multiply
    5,296.88x = 7,309.81 × 2,939.18
  4. Step 4: Simplify right side
    5,296.88x = 21,484,814.48
  5. Step 5: Solve for x
    x = 21,484,814.48/5,296.88
  6. Step 6: Final answer
    x = 4,056.12

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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.