Home / 2,681.10-4,020.30-1,585.80

Finding the Fourth Proportional to 2,681.10, 4,020.30 and 1,585.80

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Solution

The fourth proportional to 2,681.10, 4,020.30 and 1,585.80 is: 2,377.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.10 : 4,020.30 = 1,585.80 : x
  2. Step 2: Convert to fraction form
    2,681.10/4,020.30 = 1,585.80/x
  3. Step 3: Cross multiply
    2,681.10x = 4,020.30 × 1,585.80
  4. Step 4: Simplify right side
    2,681.10x = 6,375,391.74
  5. Step 5: Solve for x
    x = 6,375,391.74/2,681.10
  6. Step 6: Final answer
    x = 2,377.90

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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.