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Finding the Fourth Proportional to 3,343.73, 5,015.57 and 878.51

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Solution

The fourth proportional to 3,343.73, 5,015.57 and 878.51 is: 1,317.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,343.73 : 5,015.57 = 878.51 : x
  2. Step 2: Convert to fraction form
    3,343.73/5,015.57 = 878.51/x
  3. Step 3: Cross multiply
    3,343.73x = 5,015.57 × 878.51
  4. Step 4: Simplify right side
    3,343.73x = 4,406,228.40
  5. Step 5: Solve for x
    x = 4,406,228.40/3,343.73
  6. Step 6: Final answer
    x = 1,317.76

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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.