Home / 5,215.63-7,198.17-2,977.82

Finding the Fourth Proportional to 5,215.63, 7,198.17 and 2,977.82

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Solution

The fourth proportional to 5,215.63, 7,198.17 and 2,977.82 is: 4,109.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.63 : 7,198.17 = 2,977.82 : x
  2. Step 2: Convert to fraction form
    5,215.63/7,198.17 = 2,977.82/x
  3. Step 3: Cross multiply
    5,215.63x = 7,198.17 × 2,977.82
  4. Step 4: Simplify right side
    5,215.63x = 21,434,839.70
  5. Step 5: Solve for x
    x = 21,434,839.70/5,215.63
  6. Step 6: Final answer
    x = 4,109.74

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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.