Home / 5,156.76-7,116.36-2,798.88

Finding the Fourth Proportional to 5,156.76, 7,116.36 and 2,798.88

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Solution

The fourth proportional to 5,156.76, 7,116.36 and 2,798.88 is: 3,862.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.76 : 7,116.36 = 2,798.88 : x
  2. Step 2: Convert to fraction form
    5,156.76/7,116.36 = 2,798.88/x
  3. Step 3: Cross multiply
    5,156.76x = 7,116.36 × 2,798.88
  4. Step 4: Simplify right side
    5,156.76x = 19,917,837.68
  5. Step 5: Solve for x
    x = 19,917,837.68/5,156.76
  6. Step 6: Final answer
    x = 3,862.47

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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.