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Finding the Fourth Proportional to 2,708.96, 4,064.48 and 1,340

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Solution

The fourth proportional to 2,708.96, 4,064.48 and 1,340 is: 2,010.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,708.96 : 4,064.48 = 1,340 : x
  2. Step 2: Convert to fraction form
    2,708.96/4,064.48 = 1,340/x
  3. Step 3: Cross multiply
    2,708.96x = 4,064.48 × 1,340
  4. Step 4: Simplify right side
    2,708.96x = 5,446,403.20
  5. Step 5: Solve for x
    x = 5,446,403.20/2,708.96
  6. Step 6: Final answer
    x = 2,010.51

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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.