Home / 2,859.36-4,289.85-1,129.20

Finding the Fourth Proportional to 2,859.36, 4,289.85 and 1,129.20

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Solution

The fourth proportional to 2,859.36, 4,289.85 and 1,129.20 is: 1,694.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.36 : 4,289.85 = 1,129.20 : x
  2. Step 2: Convert to fraction form
    2,859.36/4,289.85 = 1,129.20/x
  3. Step 3: Cross multiply
    2,859.36x = 4,289.85 × 1,129.20
  4. Step 4: Simplify right side
    2,859.36x = 4,844,098.62
  5. Step 5: Solve for x
    x = 4,844,098.62/2,859.36
  6. Step 6: Final answer
    x = 1,694.12

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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.