Home / 5,156.72-7,116.30-2,798.84

Finding the Fourth Proportional to 5,156.72, 7,116.30 and 2,798.84

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Solution

The fourth proportional to 5,156.72, 7,116.30 and 2,798.84 is: 3,862.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.72 : 7,116.30 = 2,798.84 : x
  2. Step 2: Convert to fraction form
    5,156.72/7,116.30 = 2,798.84/x
  3. Step 3: Cross multiply
    5,156.72x = 7,116.30 × 2,798.84
  4. Step 4: Simplify right side
    5,156.72x = 19,917,385.09
  5. Step 5: Solve for x
    x = 19,917,385.09/5,156.72
  6. Step 6: Final answer
    x = 3,862.41

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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.