Home / 4,086.90-6,129.99-1,312.83

Finding the Fourth Proportional to 4,086.90, 6,129.99 and 1,312.83

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Solution

The fourth proportional to 4,086.90, 6,129.99 and 1,312.83 is: 1,969.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.90 : 6,129.99 = 1,312.83 : x
  2. Step 2: Convert to fraction form
    4,086.90/6,129.99 = 1,312.83/x
  3. Step 3: Cross multiply
    4,086.90x = 6,129.99 × 1,312.83
  4. Step 4: Simplify right side
    4,086.90x = 8,047,634.77
  5. Step 5: Solve for x
    x = 8,047,634.77/4,086.90
  6. Step 6: Final answer
    x = 1,969.13

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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.