Home / 2,860.10-4,286.10-2,113.90

Finding the Fourth Proportional to 2,860.10, 4,286.10 and 2,113.90

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Solution

The fourth proportional to 2,860.10, 4,286.10 and 2,113.90 is: 3,167.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.10 : 4,286.10 = 2,113.90 : x
  2. Step 2: Convert to fraction form
    2,860.10/4,286.10 = 2,113.90/x
  3. Step 3: Cross multiply
    2,860.10x = 4,286.10 × 2,113.90
  4. Step 4: Simplify right side
    2,860.10x = 9,060,386.79
  5. Step 5: Solve for x
    x = 9,060,386.79/2,860.10
  6. Step 6: Final answer
    x = 3,167.86

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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.