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Finding the Fourth Proportional to 1,913.68, 2,652.06 and 1,879.12

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Solution

The fourth proportional to 1,913.68, 2,652.06 and 1,879.12 is: 2,604.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.68 : 2,652.06 = 1,879.12 : x
  2. Step 2: Convert to fraction form
    1,913.68/2,652.06 = 1,879.12/x
  3. Step 3: Cross multiply
    1,913.68x = 2,652.06 × 1,879.12
  4. Step 4: Simplify right side
    1,913.68x = 4,983,538.99
  5. Step 5: Solve for x
    x = 4,983,538.99/1,913.68
  6. Step 6: Final answer
    x = 2,604.17

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.