Home / 5,156.82-7,116.39-2,798.98

Finding the Fourth Proportional to 5,156.82, 7,116.39 and 2,798.98

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Solution

The fourth proportional to 5,156.82, 7,116.39 and 2,798.98 is: 3,862.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.82 : 7,116.39 = 2,798.98 : x
  2. Step 2: Convert to fraction form
    5,156.82/7,116.39 = 2,798.98/x
  3. Step 3: Cross multiply
    5,156.82x = 7,116.39 × 2,798.98
  4. Step 4: Simplify right side
    5,156.82x = 19,918,615.49
  5. Step 5: Solve for x
    x = 19,918,615.49/5,156.82
  6. Step 6: Final answer
    x = 3,862.58

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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.