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Finding the Fourth Proportional to 2,718.68, 3,751.65 and 1,539.72

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Solution

The fourth proportional to 2,718.68, 3,751.65 and 1,539.72 is: 2,124.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.68 : 3,751.65 = 1,539.72 : x
  2. Step 2: Convert to fraction form
    2,718.68/3,751.65 = 1,539.72/x
  3. Step 3: Cross multiply
    2,718.68x = 3,751.65 × 1,539.72
  4. Step 4: Simplify right side
    2,718.68x = 5,776,490.54
  5. Step 5: Solve for x
    x = 5,776,490.54/2,718.68
  6. Step 6: Final answer
    x = 2,124.74

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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.