Home / 3,421.19-5,120.83-1,775.48

Finding the Fourth Proportional to 3,421.19, 5,120.83 and 1,775.48

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Solution

The fourth proportional to 3,421.19, 5,120.83 and 1,775.48 is: 2,657.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.19 : 5,120.83 = 1,775.48 : x
  2. Step 2: Convert to fraction form
    3,421.19/5,120.83 = 1,775.48/x
  3. Step 3: Cross multiply
    3,421.19x = 5,120.83 × 1,775.48
  4. Step 4: Simplify right side
    3,421.19x = 9,091,931.25
  5. Step 5: Solve for x
    x = 9,091,931.25/3,421.19
  6. Step 6: Final answer
    x = 2,657.53

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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.