Home / 4,086.65-6,129.57-1,315.34

Finding the Fourth Proportional to 4,086.65, 6,129.57 and 1,315.34

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Solution

The fourth proportional to 4,086.65, 6,129.57 and 1,315.34 is: 1,972.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.65 : 6,129.57 = 1,315.34 : x
  2. Step 2: Convert to fraction form
    4,086.65/6,129.57 = 1,315.34/x
  3. Step 3: Cross multiply
    4,086.65x = 6,129.57 × 1,315.34
  4. Step 4: Simplify right side
    4,086.65x = 8,062,465.87
  5. Step 5: Solve for x
    x = 8,062,465.87/4,086.65
  6. Step 6: Final answer
    x = 1,972.88

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1.5x scale

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.