Home / 2,689.15-4,029.40-2,588.00

Finding the Fourth Proportional to 2,689.15, 4,029.40 and 2,588.00

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Solution

The fourth proportional to 2,689.15, 4,029.40 and 2,588.00 is: 3,877.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.15 : 4,029.40 = 2,588.00 : x
  2. Step 2: Convert to fraction form
    2,689.15/4,029.40 = 2,588.00/x
  3. Step 3: Cross multiply
    2,689.15x = 4,029.40 × 2,588.00
  4. Step 4: Simplify right side
    2,689.15x = 10,428,078.40
  5. Step 5: Solve for x
    x = 10,428,078.40/2,689.15
  6. Step 6: Final answer
    x = 3,877.84

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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.