Home / 5,169.60-7,140.06-3,409.20

Finding the Fourth Proportional to 5,169.60, 7,140.06 and 3,409.20

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Solution

The fourth proportional to 5,169.60, 7,140.06 and 3,409.20 is: 4,708.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.60 : 7,140.06 = 3,409.20 : x
  2. Step 2: Convert to fraction form
    5,169.60/7,140.06 = 3,409.20/x
  3. Step 3: Cross multiply
    5,169.60x = 7,140.06 × 3,409.20
  4. Step 4: Simplify right side
    5,169.60x = 24,341,892.55
  5. Step 5: Solve for x
    x = 24,341,892.55/5,169.60
  6. Step 6: Final answer
    x = 4,708.66

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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.