Home / 2,775.21-4,160.03-1,543.20

Finding the Fourth Proportional to 2,775.21, 4,160.03 and 1,543.20

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Solution

The fourth proportional to 2,775.21, 4,160.03 and 1,543.20 is: 2,313.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.21 : 4,160.03 = 1,543.20 : x
  2. Step 2: Convert to fraction form
    2,775.21/4,160.03 = 1,543.20/x
  3. Step 3: Cross multiply
    2,775.21x = 4,160.03 × 1,543.20
  4. Step 4: Simplify right side
    2,775.21x = 6,419,750.58
  5. Step 5: Solve for x
    x = 6,419,750.58/2,775.21
  6. Step 6: Final answer
    x = 2,313.25

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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.