Home / 2,420.28-3,338.82-1,580.64

Finding the Fourth Proportional to 2,420.28, 3,338.82 and 1,580.64

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Solution

The fourth proportional to 2,420.28, 3,338.82 and 1,580.64 is: 2,180.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.28 : 3,338.82 = 1,580.64 : x
  2. Step 2: Convert to fraction form
    2,420.28/3,338.82 = 1,580.64/x
  3. Step 3: Cross multiply
    2,420.28x = 3,338.82 × 1,580.64
  4. Step 4: Simplify right side
    2,420.28x = 5,277,469.31
  5. Step 5: Solve for x
    x = 5,277,469.31/2,420.28
  6. Step 6: Final answer
    x = 2,180.52

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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.