Home / 2,769.28-3,821.58-1,590.76

Finding the Fourth Proportional to 2,769.28, 3,821.58 and 1,590.76

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Solution

The fourth proportional to 2,769.28, 3,821.58 and 1,590.76 is: 2,195.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.28 : 3,821.58 = 1,590.76 : x
  2. Step 2: Convert to fraction form
    2,769.28/3,821.58 = 1,590.76/x
  3. Step 3: Cross multiply
    2,769.28x = 3,821.58 × 1,590.76
  4. Step 4: Simplify right side
    2,769.28x = 6,079,216.60
  5. Step 5: Solve for x
    x = 6,079,216.60/2,769.28
  6. Step 6: Final answer
    x = 2,195.23

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Half scale
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Double scale
Find fourth proportional to 2,770.28, 3,822.96 and 1,591.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.