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Finding the Fourth Proportional to 3,574.29, 4,939.29 and 2,688.56

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Solution

The fourth proportional to 3,574.29, 4,939.29 and 2,688.56 is: 3,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,574.29 : 4,939.29 = 2,688.56 : x
  2. Step 2: Convert to fraction form
    3,574.29/4,939.29 = 2,688.56/x
  3. Step 3: Cross multiply
    3,574.29x = 4,939.29 × 2,688.56
  4. Step 4: Simplify right side
    3,574.29x = 13,279,552.83
  5. Step 5: Solve for x
    x = 13,279,552.83/3,574.29
  6. Step 6: Final answer
    x = 3,715.30

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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.