Home / 3,980.40-5,495.48-2,723.55

Finding the Fourth Proportional to 3,980.40, 5,495.48 and 2,723.55

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Solution

The fourth proportional to 3,980.40, 5,495.48 and 2,723.55 is: 3,760.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.40 : 5,495.48 = 2,723.55 : x
  2. Step 2: Convert to fraction form
    3,980.40/5,495.48 = 2,723.55/x
  3. Step 3: Cross multiply
    3,980.40x = 5,495.48 × 2,723.55
  4. Step 4: Simplify right side
    3,980.40x = 14,967,214.55
  5. Step 5: Solve for x
    x = 14,967,214.55/3,980.40
  6. Step 6: Final answer
    x = 3,760.23

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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.