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Finding the Fourth Proportional to 5,057.99, 6,979.93 and 2,820.02

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Solution

The fourth proportional to 5,057.99, 6,979.93 and 2,820.02 is: 3,891.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.99 : 6,979.93 = 2,820.02 : x
  2. Step 2: Convert to fraction form
    5,057.99/6,979.93 = 2,820.02/x
  3. Step 3: Cross multiply
    5,057.99x = 6,979.93 × 2,820.02
  4. Step 4: Simplify right side
    5,057.99x = 19,683,552.60
  5. Step 5: Solve for x
    x = 19,683,552.60/5,057.99
  6. Step 6: Final answer
    x = 3,891.58

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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.