Home / 2,539.38-3,504.40-1,420.26

Finding the Fourth Proportional to 2,539.38, 3,504.40 and 1,420.26

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Solution

The fourth proportional to 2,539.38, 3,504.40 and 1,420.26 is: 1,959.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.38 : 3,504.40 = 1,420.26 : x
  2. Step 2: Convert to fraction form
    2,539.38/3,504.40 = 1,420.26/x
  3. Step 3: Cross multiply
    2,539.38x = 3,504.40 × 1,420.26
  4. Step 4: Simplify right side
    2,539.38x = 4,977,159.14
  5. Step 5: Solve for x
    x = 4,977,159.14/2,539.38
  6. Step 6: Final answer
    x = 1,959.99

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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.