Home / 2,540.02-3,505.20-1,420.95

Finding the Fourth Proportional to 2,540.02, 3,505.20 and 1,420.95

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Solution

The fourth proportional to 2,540.02, 3,505.20 and 1,420.95 is: 1,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.02 : 3,505.20 = 1,420.95 : x
  2. Step 2: Convert to fraction form
    2,540.02/3,505.20 = 1,420.95/x
  3. Step 3: Cross multiply
    2,540.02x = 3,505.20 × 1,420.95
  4. Step 4: Simplify right side
    2,540.02x = 4,980,713.94
  5. Step 5: Solve for x
    x = 4,980,713.94/2,540.02
  6. Step 6: Final answer
    x = 1,960.90

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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.