Home / 3,115.29-4,299.36-1,718.31

Finding the Fourth Proportional to 3,115.29, 4,299.36 and 1,718.31

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Solution

The fourth proportional to 3,115.29, 4,299.36 and 1,718.31 is: 2,371.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.29 : 4,299.36 = 1,718.31 : x
  2. Step 2: Convert to fraction form
    3,115.29/4,299.36 = 1,718.31/x
  3. Step 3: Cross multiply
    3,115.29x = 4,299.36 × 1,718.31
  4. Step 4: Simplify right side
    3,115.29x = 7,387,633.28
  5. Step 5: Solve for x
    x = 7,387,633.28/3,115.29
  6. Step 6: Final answer
    x = 2,371.41

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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.