Home / 2,539.91-3,505.39-1,420.91

Finding the Fourth Proportional to 2,539.91, 3,505.39 and 1,420.91

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Solution

The fourth proportional to 2,539.91, 3,505.39 and 1,420.91 is: 1,961.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.91 : 3,505.39 = 1,420.91 : x
  2. Step 2: Convert to fraction form
    2,539.91/3,505.39 = 1,420.91/x
  3. Step 3: Cross multiply
    2,539.91x = 3,505.39 × 1,420.91
  4. Step 4: Simplify right side
    2,539.91x = 4,980,826.18
  5. Step 5: Solve for x
    x = 4,980,826.18/2,539.91
  6. Step 6: Final answer
    x = 1,961.03

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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.