Home / 3,153.69-4,732.65-2,178.05

Finding the Fourth Proportional to 3,153.69, 4,732.65 and 2,178.05

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Solution

The fourth proportional to 3,153.69, 4,732.65 and 2,178.05 is: 3,268.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.69 : 4,732.65 = 2,178.05 : x
  2. Step 2: Convert to fraction form
    3,153.69/4,732.65 = 2,178.05/x
  3. Step 3: Cross multiply
    3,153.69x = 4,732.65 × 2,178.05
  4. Step 4: Simplify right side
    3,153.69x = 10,307,924.67
  5. Step 5: Solve for x
    x = 10,307,924.67/3,153.69
  6. Step 6: Final answer
    x = 3,268.53

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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.