Home / 2,287.15-3,430.72-826.28

Finding the Fourth Proportional to 2,287.15, 3,430.72 and 826.28

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Solution

The fourth proportional to 2,287.15, 3,430.72 and 826.28 is: 1,239.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.15 : 3,430.72 = 826.28 : x
  2. Step 2: Convert to fraction form
    2,287.15/3,430.72 = 826.28/x
  3. Step 3: Cross multiply
    2,287.15x = 3,430.72 × 826.28
  4. Step 4: Simplify right side
    2,287.15x = 2,834,735.32
  5. Step 5: Solve for x
    x = 2,834,735.32/2,287.15
  6. Step 6: Final answer
    x = 1,239.42

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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.