Home / 3,145.28-4,340.64-1,748

Finding the Fourth Proportional to 3,145.28, 4,340.64 and 1,748

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Solution

The fourth proportional to 3,145.28, 4,340.64 and 1,748 is: 2,412.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.28 : 4,340.64 = 1,748 : x
  2. Step 2: Convert to fraction form
    3,145.28/4,340.64 = 1,748/x
  3. Step 3: Cross multiply
    3,145.28x = 4,340.64 × 1,748
  4. Step 4: Simplify right side
    3,145.28x = 7,587,438.72
  5. Step 5: Solve for x
    x = 7,587,438.72/3,145.28
  6. Step 6: Final answer
    x = 2,412.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.