Home / 2,905.38-4,002.96-1,908.90

Finding the Fourth Proportional to 2,905.38, 4,002.96 and 1,908.90

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Solution

The fourth proportional to 2,905.38, 4,002.96 and 1,908.90 is: 2,630.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.38 : 4,002.96 = 1,908.90 : x
  2. Step 2: Convert to fraction form
    2,905.38/4,002.96 = 1,908.90/x
  3. Step 3: Cross multiply
    2,905.38x = 4,002.96 × 1,908.90
  4. Step 4: Simplify right side
    2,905.38x = 7,641,250.34
  5. Step 5: Solve for x
    x = 7,641,250.34/2,905.38
  6. Step 6: Final answer
    x = 2,630.03

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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.