Home / 5,156.48-7,115.96-2,798.63

Finding the Fourth Proportional to 5,156.48, 7,115.96 and 2,798.63

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Solution

The fourth proportional to 5,156.48, 7,115.96 and 2,798.63 is: 3,862.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.48 : 7,115.96 = 2,798.63 : x
  2. Step 2: Convert to fraction form
    5,156.48/7,115.96 = 2,798.63/x
  3. Step 3: Cross multiply
    5,156.48x = 7,115.96 × 2,798.63
  4. Step 4: Simplify right side
    5,156.48x = 19,914,889.56
  5. Step 5: Solve for x
    x = 19,914,889.56/5,156.48
  6. Step 6: Final answer
    x = 3,862.11

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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.