Home / 2,819.07-4,228.65-871.25

Finding the Fourth Proportional to 2,819.07, 4,228.65 and 871.25

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Solution

The fourth proportional to 2,819.07, 4,228.65 and 871.25 is: 1,306.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.07 : 4,228.65 = 871.25 : x
  2. Step 2: Convert to fraction form
    2,819.07/4,228.65 = 871.25/x
  3. Step 3: Cross multiply
    2,819.07x = 4,228.65 × 871.25
  4. Step 4: Simplify right side
    2,819.07x = 3,684,206.96
  5. Step 5: Solve for x
    x = 3,684,206.96/2,819.07
  6. Step 6: Final answer
    x = 1,306.89

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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.