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Finding the Fourth Proportional to 2,665.68, 3,994.68 and 2,089.68

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Solution

The fourth proportional to 2,665.68, 3,994.68 and 2,089.68 is: 3,131.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.68 : 3,994.68 = 2,089.68 : x
  2. Step 2: Convert to fraction form
    2,665.68/3,994.68 = 2,089.68/x
  3. Step 3: Cross multiply
    2,665.68x = 3,994.68 × 2,089.68
  4. Step 4: Simplify right side
    2,665.68x = 8,347,602.90
  5. Step 5: Solve for x
    x = 8,347,602.90/2,665.68
  6. Step 6: Final answer
    x = 3,131.51

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1.5x scale

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.