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Finding the Fourth Proportional to 5,204.79, 7,808.23 and 1,917.90

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Solution

The fourth proportional to 5,204.79, 7,808.23 and 1,917.90 is: 2,877.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,204.79 : 7,808.23 = 1,917.90 : x
  2. Step 2: Convert to fraction form
    5,204.79/7,808.23 = 1,917.90/x
  3. Step 3: Cross multiply
    5,204.79x = 7,808.23 × 1,917.90
  4. Step 4: Simplify right side
    5,204.79x = 14,975,404.32
  5. Step 5: Solve for x
    x = 14,975,404.32/5,204.79
  6. Step 6: Final answer
    x = 2,877.24

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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.