Home / 5,145.31-7,100.66-3,154.72

Finding the Fourth Proportional to 5,145.31, 7,100.66 and 3,154.72

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Solution

The fourth proportional to 5,145.31, 7,100.66 and 3,154.72 is: 4,353.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.31 : 7,100.66 = 3,154.72 : x
  2. Step 2: Convert to fraction form
    5,145.31/7,100.66 = 3,154.72/x
  3. Step 3: Cross multiply
    5,145.31x = 7,100.66 × 3,154.72
  4. Step 4: Simplify right side
    5,145.31x = 22,400,542.84
  5. Step 5: Solve for x
    x = 22,400,542.84/5,145.31
  6. Step 6: Final answer
    x = 4,353.59

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1.5x scale

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.