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Finding the Fourth Proportional to 3,559.77, 5,341.47 and 1,917.90

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Solution

The fourth proportional to 3,559.77, 5,341.47 and 1,917.90 is: 2,877.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,559.77 : 5,341.47 = 1,917.90 : x
  2. Step 2: Convert to fraction form
    3,559.77/5,341.47 = 1,917.90/x
  3. Step 3: Cross multiply
    3,559.77x = 5,341.47 × 1,917.90
  4. Step 4: Simplify right side
    3,559.77x = 10,244,405.31
  5. Step 5: Solve for x
    x = 10,244,405.31/3,559.77
  6. Step 6: Final answer
    x = 2,877.83

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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.