Home / 2,126.13-3,187.00-1,539.65

Finding the Fourth Proportional to 2,126.13, 3,187.00 and 1,539.65

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Solution

The fourth proportional to 2,126.13, 3,187.00 and 1,539.65 is: 2,307.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.13 : 3,187.00 = 1,539.65 : x
  2. Step 2: Convert to fraction form
    2,126.13/3,187.00 = 1,539.65/x
  3. Step 3: Cross multiply
    2,126.13x = 3,187.00 × 1,539.65
  4. Step 4: Simplify right side
    2,126.13x = 4,906,865.78
  5. Step 5: Solve for x
    x = 4,906,865.78/2,126.13
  6. Step 6: Final answer
    x = 2,307.89

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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.