Home / 2,912.99-4,017.92-1,864.58

Finding the Fourth Proportional to 2,912.99, 4,017.92 and 1,864.58

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Solution

The fourth proportional to 2,912.99, 4,017.92 and 1,864.58 is: 2,571.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.99 : 4,017.92 = 1,864.58 : x
  2. Step 2: Convert to fraction form
    2,912.99/4,017.92 = 1,864.58/x
  3. Step 3: Cross multiply
    2,912.99x = 4,017.92 × 1,864.58
  4. Step 4: Simplify right side
    2,912.99x = 7,491,703.86
  5. Step 5: Solve for x
    x = 7,491,703.86/2,912.99
  6. Step 6: Final answer
    x = 2,571.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.