Home / 3,127.24-4,315.62-1,885

Finding the Fourth Proportional to 3,127.24, 4,315.62 and 1,885

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Solution

The fourth proportional to 3,127.24, 4,315.62 and 1,885 is: 2,601.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.24 : 4,315.62 = 1,885 : x
  2. Step 2: Convert to fraction form
    3,127.24/4,315.62 = 1,885/x
  3. Step 3: Cross multiply
    3,127.24x = 4,315.62 × 1,885
  4. Step 4: Simplify right side
    3,127.24x = 8,134,943.70
  5. Step 5: Solve for x
    x = 8,134,943.70/3,127.24
  6. Step 6: Final answer
    x = 2,601.32

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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.