Home / 2,857.29-4,288.36-1,127.13

Finding the Fourth Proportional to 2,857.29, 4,288.36 and 1,127.13

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Solution

The fourth proportional to 2,857.29, 4,288.36 and 1,127.13 is: 1,691.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.29 : 4,288.36 = 1,127.13 : x
  2. Step 2: Convert to fraction form
    2,857.29/4,288.36 = 1,127.13/x
  3. Step 3: Cross multiply
    2,857.29x = 4,288.36 × 1,127.13
  4. Step 4: Simplify right side
    2,857.29x = 4,833,539.21
  5. Step 5: Solve for x
    x = 4,833,539.21/2,857.29
  6. Step 6: Final answer
    x = 1,691.65

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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.