Home / 2,730.21-3,767.68-1,535.20

Finding the Fourth Proportional to 2,730.21, 3,767.68 and 1,535.20

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Solution

The fourth proportional to 2,730.21, 3,767.68 and 1,535.20 is: 2,118.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,730.21 : 3,767.68 = 1,535.20 : x
  2. Step 2: Convert to fraction form
    2,730.21/3,767.68 = 1,535.20/x
  3. Step 3: Cross multiply
    2,730.21x = 3,767.68 × 1,535.20
  4. Step 4: Simplify right side
    2,730.21x = 5,784,146.09
  5. Step 5: Solve for x
    x = 5,784,146.09/2,730.21
  6. Step 6: Final answer
    x = 2,118.57

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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.