Home / 1,815.44-2,505.84-1,152.80

Finding the Fourth Proportional to 1,815.44, 2,505.84 and 1,152.80

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Solution

The fourth proportional to 1,815.44, 2,505.84 and 1,152.80 is: 1,591.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.44 : 2,505.84 = 1,152.80 : x
  2. Step 2: Convert to fraction form
    1,815.44/2,505.84 = 1,152.80/x
  3. Step 3: Cross multiply
    1,815.44x = 2,505.84 × 1,152.80
  4. Step 4: Simplify right side
    1,815.44x = 2,888,732.35
  5. Step 5: Solve for x
    x = 2,888,732.35/1,815.44
  6. Step 6: Final answer
    x = 1,591.20

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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.