Home / 1,727.80-2,382.51-1,137.31

Finding the Fourth Proportional to 1,727.80, 2,382.51 and 1,137.31

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Solution

The fourth proportional to 1,727.80, 2,382.51 and 1,137.31 is: 1,568.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.80 : 2,382.51 = 1,137.31 : x
  2. Step 2: Convert to fraction form
    1,727.80/2,382.51 = 1,137.31/x
  3. Step 3: Cross multiply
    1,727.80x = 2,382.51 × 1,137.31
  4. Step 4: Simplify right side
    1,727.80x = 2,709,650.76
  5. Step 5: Solve for x
    x = 2,709,650.76/1,727.80
  6. Step 6: Final answer
    x = 1,568.27

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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.