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Finding the Fourth Proportional to 2,015.01, 2,780.64 and 1,175.76

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Solution

The fourth proportional to 2,015.01, 2,780.64 and 1,175.76 is: 1,622.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.01 : 2,780.64 = 1,175.76 : x
  2. Step 2: Convert to fraction form
    2,015.01/2,780.64 = 1,175.76/x
  3. Step 3: Cross multiply
    2,015.01x = 2,780.64 × 1,175.76
  4. Step 4: Simplify right side
    2,015.01x = 3,269,365.29
  5. Step 5: Solve for x
    x = 3,269,365.29/2,015.01
  6. Step 6: Final answer
    x = 1,622.51

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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.