Home / 2,151.28-3,228.18-852.58

Finding the Fourth Proportional to 2,151.28, 3,228.18 and 852.58

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Solution

The fourth proportional to 2,151.28, 3,228.18 and 852.58 is: 1,279.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.28 : 3,228.18 = 852.58 : x
  2. Step 2: Convert to fraction form
    2,151.28/3,228.18 = 852.58/x
  3. Step 3: Cross multiply
    2,151.28x = 3,228.18 × 852.58
  4. Step 4: Simplify right side
    2,151.28x = 2,752,281.70
  5. Step 5: Solve for x
    x = 2,752,281.70/2,151.28
  6. Step 6: Final answer
    x = 1,279.37

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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.