Home / 4,087.10-6,130.65-2,139.90

Finding the Fourth Proportional to 4,087.10, 6,130.65 and 2,139.90

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Solution

The fourth proportional to 4,087.10, 6,130.65 and 2,139.90 is: 3,209.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.10 : 6,130.65 = 2,139.90 : x
  2. Step 2: Convert to fraction form
    4,087.10/6,130.65 = 2,139.90/x
  3. Step 3: Cross multiply
    4,087.10x = 6,130.65 × 2,139.90
  4. Step 4: Simplify right side
    4,087.10x = 13,118,977.94
  5. Step 5: Solve for x
    x = 13,118,977.94/4,087.10
  6. Step 6: Final answer
    x = 3,209.85

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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.