Home / 2,731.30-4,101.90-2,391.10

Finding the Fourth Proportional to 2,731.30, 4,101.90 and 2,391.10

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Solution

The fourth proportional to 2,731.30, 4,101.90 and 2,391.10 is: 3,590.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,731.30 : 4,101.90 = 2,391.10 : x
  2. Step 2: Convert to fraction form
    2,731.30/4,101.90 = 2,391.10/x
  3. Step 3: Cross multiply
    2,731.30x = 4,101.90 × 2,391.10
  4. Step 4: Simplify right side
    2,731.30x = 9,808,053.09
  5. Step 5: Solve for x
    x = 9,808,053.09/2,731.30
  6. Step 6: Final answer
    x = 3,590.98

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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.