Home / 2,420.60-3,332.24-2,171.84

Finding the Fourth Proportional to 2,420.60, 3,332.24 and 2,171.84

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Solution

The fourth proportional to 2,420.60, 3,332.24 and 2,171.84 is: 2,989.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.60 : 3,332.24 = 2,171.84 : x
  2. Step 2: Convert to fraction form
    2,420.60/3,332.24 = 2,171.84/x
  3. Step 3: Cross multiply
    2,420.60x = 3,332.24 × 2,171.84
  4. Step 4: Simplify right side
    2,420.60x = 7,237,092.12
  5. Step 5: Solve for x
    x = 7,237,092.12/2,420.60
  6. Step 6: Final answer
    x = 2,989.79

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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.