Home / 5,145.22-7,100.54-3,154.60

Finding the Fourth Proportional to 5,145.22, 7,100.54 and 3,154.60

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Solution

The fourth proportional to 5,145.22, 7,100.54 and 3,154.60 is: 4,353.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.22 : 7,100.54 = 3,154.60 : x
  2. Step 2: Convert to fraction form
    5,145.22/7,100.54 = 3,154.60/x
  3. Step 3: Cross multiply
    5,145.22x = 7,100.54 × 3,154.60
  4. Step 4: Simplify right side
    5,145.22x = 22,399,319.60
  5. Step 5: Solve for x
    x = 22,399,319.60/5,145.22
  6. Step 6: Final answer
    x = 4,353.42

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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.