Home / 2,215.85-3,057.92-1,431.27

Finding the Fourth Proportional to 2,215.85, 3,057.92 and 1,431.27

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Solution

The fourth proportional to 2,215.85, 3,057.92 and 1,431.27 is: 1,975.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.85 : 3,057.92 = 1,431.27 : x
  2. Step 2: Convert to fraction form
    2,215.85/3,057.92 = 1,431.27/x
  3. Step 3: Cross multiply
    2,215.85x = 3,057.92 × 1,431.27
  4. Step 4: Simplify right side
    2,215.85x = 4,376,690.53
  5. Step 5: Solve for x
    x = 4,376,690.53/2,215.85
  6. Step 6: Final answer
    x = 1,975.17

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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.