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Finding the Fourth Proportional to 3,716.50, 5,575.02 and 1,408

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Solution

The fourth proportional to 3,716.50, 5,575.02 and 1,408 is: 2,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,716.50 : 5,575.02 = 1,408 : x
  2. Step 2: Convert to fraction form
    3,716.50/5,575.02 = 1,408/x
  3. Step 3: Cross multiply
    3,716.50x = 5,575.02 × 1,408
  4. Step 4: Simplify right side
    3,716.50x = 7,849,628.16
  5. Step 5: Solve for x
    x = 7,849,628.16/3,716.50
  6. Step 6: Final answer
    x = 2,112.10

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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.