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Finding the Fourth Proportional to 2,632.55, 3,939.70 and 1,903.55

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Solution

The fourth proportional to 2,632.55, 3,939.70 and 1,903.55 is: 2,848.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,632.55 : 3,939.70 = 1,903.55 : x
  2. Step 2: Convert to fraction form
    2,632.55/3,939.70 = 1,903.55/x
  3. Step 3: Cross multiply
    2,632.55x = 3,939.70 × 1,903.55
  4. Step 4: Simplify right side
    2,632.55x = 7,499,415.94
  5. Step 5: Solve for x
    x = 7,499,415.94/2,632.55
  6. Step 6: Final answer
    x = 2,848.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.