Home / 3,389.36-4,663.20-2,989.28

Finding the Fourth Proportional to 3,389.36, 4,663.20 and 2,989.28

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Solution

The fourth proportional to 3,389.36, 4,663.20 and 2,989.28 is: 4,112.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.36 : 4,663.20 = 2,989.28 : x
  2. Step 2: Convert to fraction form
    3,389.36/4,663.20 = 2,989.28/x
  3. Step 3: Cross multiply
    3,389.36x = 4,663.20 × 2,989.28
  4. Step 4: Simplify right side
    3,389.36x = 13,939,610.50
  5. Step 5: Solve for x
    x = 13,939,610.50/3,389.36
  6. Step 6: Final answer
    x = 4,112.76

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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.