Home / 2,988.66-4,123.99-1,644.05

Finding the Fourth Proportional to 2,988.66, 4,123.99 and 1,644.05

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Solution

The fourth proportional to 2,988.66, 4,123.99 and 1,644.05 is: 2,268.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.66 : 4,123.99 = 1,644.05 : x
  2. Step 2: Convert to fraction form
    2,988.66/4,123.99 = 1,644.05/x
  3. Step 3: Cross multiply
    2,988.66x = 4,123.99 × 1,644.05
  4. Step 4: Simplify right side
    2,988.66x = 6,780,045.76
  5. Step 5: Solve for x
    x = 6,780,045.76/2,988.66
  6. Step 6: Final answer
    x = 2,268.59

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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.