Home / 2,555.10-3,832.65-2,145.05

Finding the Fourth Proportional to 2,555.10, 3,832.65 and 2,145.05

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Solution

The fourth proportional to 2,555.10, 3,832.65 and 2,145.05 is: 3,217.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555.10 : 3,832.65 = 2,145.05 : x
  2. Step 2: Convert to fraction form
    2,555.10/3,832.65 = 2,145.05/x
  3. Step 3: Cross multiply
    2,555.10x = 3,832.65 × 2,145.05
  4. Step 4: Simplify right side
    2,555.10x = 8,221,206.72
  5. Step 5: Solve for x
    x = 8,221,206.72/2,555.10
  6. Step 6: Final answer
    x = 3,217.57

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Half scale
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Double scale
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Similar ratio
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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.