Home / 3,712.68-5,561.46-2,978.28

Finding the Fourth Proportional to 3,712.68, 5,561.46 and 2,978.28

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Solution

The fourth proportional to 3,712.68, 5,561.46 and 2,978.28 is: 4,461.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.68 : 5,561.46 = 2,978.28 : x
  2. Step 2: Convert to fraction form
    3,712.68/5,561.46 = 2,978.28/x
  3. Step 3: Cross multiply
    3,712.68x = 5,561.46 × 2,978.28
  4. Step 4: Simplify right side
    3,712.68x = 16,563,585.09
  5. Step 5: Solve for x
    x = 16,563,585.09/3,712.68
  6. Step 6: Final answer
    x = 4,461.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.