Home / 3,420.89-5,127.58-1,340.54

Finding the Fourth Proportional to 3,420.89, 5,127.58 and 1,340.54

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Solution

The fourth proportional to 3,420.89, 5,127.58 and 1,340.54 is: 2,009.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.89 : 5,127.58 = 1,340.54 : x
  2. Step 2: Convert to fraction form
    3,420.89/5,127.58 = 1,340.54/x
  3. Step 3: Cross multiply
    3,420.89x = 5,127.58 × 1,340.54
  4. Step 4: Simplify right side
    3,420.89x = 6,873,697.10
  5. Step 5: Solve for x
    x = 6,873,697.10/3,420.89
  6. Step 6: Final answer
    x = 2,009.33

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1.5x scale

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.