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Finding the Fourth Proportional to 3,402.42, 5,100.87 and 1,455.99

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Solution

The fourth proportional to 3,402.42, 5,100.87 and 1,455.99 is: 2,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,402.42 : 5,100.87 = 1,455.99 : x
  2. Step 2: Convert to fraction form
    3,402.42/5,100.87 = 1,455.99/x
  3. Step 3: Cross multiply
    3,402.42x = 5,100.87 × 1,455.99
  4. Step 4: Simplify right side
    3,402.42x = 7,426,809.22
  5. Step 5: Solve for x
    x = 7,426,809.22/3,402.42
  6. Step 6: Final answer
    x = 2,182.80

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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.