Home / 3,128.91-4,689.26-2,017.98

Finding the Fourth Proportional to 3,128.91, 4,689.26 and 2,017.98

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Solution

The fourth proportional to 3,128.91, 4,689.26 and 2,017.98 is: 3,024.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.91 : 4,689.26 = 2,017.98 : x
  2. Step 2: Convert to fraction form
    3,128.91/4,689.26 = 2,017.98/x
  3. Step 3: Cross multiply
    3,128.91x = 4,689.26 × 2,017.98
  4. Step 4: Simplify right side
    3,128.91x = 9,462,822.80
  5. Step 5: Solve for x
    x = 9,462,822.80/3,128.91
  6. Step 6: Final answer
    x = 3,024.32

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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.