Home / 5,156.02-7,115.39-2,887.62

Finding the Fourth Proportional to 5,156.02, 7,115.39 and 2,887.62

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Solution

The fourth proportional to 5,156.02, 7,115.39 and 2,887.62 is: 3,984.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.02 : 7,115.39 = 2,887.62 : x
  2. Step 2: Convert to fraction form
    5,156.02/7,115.39 = 2,887.62/x
  3. Step 3: Cross multiply
    5,156.02x = 7,115.39 × 2,887.62
  4. Step 4: Simplify right side
    5,156.02x = 20,546,542.47
  5. Step 5: Solve for x
    x = 20,546,542.47/5,156.02
  6. Step 6: Final answer
    x = 3,984.96

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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.