Home / 3,561.12-4,913.76-1,988.96

Finding the Fourth Proportional to 3,561.12, 4,913.76 and 1,988.96

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Solution

The fourth proportional to 3,561.12, 4,913.76 and 1,988.96 is: 2,744.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.12 : 4,913.76 = 1,988.96 : x
  2. Step 2: Convert to fraction form
    3,561.12/4,913.76 = 1,988.96/x
  3. Step 3: Cross multiply
    3,561.12x = 4,913.76 × 1,988.96
  4. Step 4: Simplify right side
    3,561.12x = 9,773,272.09
  5. Step 5: Solve for x
    x = 9,773,272.09/3,561.12
  6. Step 6: Final answer
    x = 2,744.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.