Home / 3,127.68-4,688.64-1,394.88

Finding the Fourth Proportional to 3,127.68, 4,688.64 and 1,394.88

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Solution

The fourth proportional to 3,127.68, 4,688.64 and 1,394.88 is: 2,091.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.68 : 4,688.64 = 1,394.88 : x
  2. Step 2: Convert to fraction form
    3,127.68/4,688.64 = 1,394.88/x
  3. Step 3: Cross multiply
    3,127.68x = 4,688.64 × 1,394.88
  4. Step 4: Simplify right side
    3,127.68x = 6,540,090.16
  5. Step 5: Solve for x
    x = 6,540,090.16/3,127.68
  6. Step 6: Final answer
    x = 2,091.04

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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.