Home / 2,930.40-4,043.86-1,604.09

Finding the Fourth Proportional to 2,930.40, 4,043.86 and 1,604.09

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Solution

The fourth proportional to 2,930.40, 4,043.86 and 1,604.09 is: 2,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.40 : 4,043.86 = 1,604.09 : x
  2. Step 2: Convert to fraction form
    2,930.40/4,043.86 = 1,604.09/x
  3. Step 3: Cross multiply
    2,930.40x = 4,043.86 × 1,604.09
  4. Step 4: Simplify right side
    2,930.40x = 6,486,721.49
  5. Step 5: Solve for x
    x = 6,486,721.49/2,930.40
  6. Step 6: Final answer
    x = 2,213.60

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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.