Home / 5,308.24-7,989.02-3,998.78

Finding the Fourth Proportional to 5,308.24, 7,989.02 and 3,998.78

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Solution

The fourth proportional to 5,308.24, 7,989.02 and 3,998.78 is: 6,018.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,308.24 : 7,989.02 = 3,998.78 : x
  2. Step 2: Convert to fraction form
    5,308.24/7,989.02 = 3,998.78/x
  3. Step 3: Cross multiply
    5,308.24x = 7,989.02 × 3,998.78
  4. Step 4: Simplify right side
    5,308.24x = 31,946,333.40
  5. Step 5: Solve for x
    x = 31,946,333.40/5,308.24
  6. Step 6: Final answer
    x = 6,018.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.