Home / 2,825.36-4,238.58-877.12

Finding the Fourth Proportional to 2,825.36, 4,238.58 and 877.12

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Solution

The fourth proportional to 2,825.36, 4,238.58 and 877.12 is: 1,315.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,825.36 : 4,238.58 = 877.12 : x
  2. Step 2: Convert to fraction form
    2,825.36/4,238.58 = 877.12/x
  3. Step 3: Cross multiply
    2,825.36x = 4,238.58 × 877.12
  4. Step 4: Simplify right side
    2,825.36x = 3,717,743.29
  5. Step 5: Solve for x
    x = 3,717,743.29/2,825.36
  6. Step 6: Final answer
    x = 1,315.85

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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.