Home / 2,988.31-4,124.00-1,729.43

Finding the Fourth Proportional to 2,988.31, 4,124.00 and 1,729.43

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Solution

The fourth proportional to 2,988.31, 4,124.00 and 1,729.43 is: 2,386.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.31 : 4,124.00 = 1,729.43 : x
  2. Step 2: Convert to fraction form
    2,988.31/4,124.00 = 1,729.43/x
  3. Step 3: Cross multiply
    2,988.31x = 4,124.00 × 1,729.43
  4. Step 4: Simplify right side
    2,988.31x = 7,132,153.02
  5. Step 5: Solve for x
    x = 7,132,153.02/2,988.31
  6. Step 6: Final answer
    x = 2,386.68

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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.