Home / 2,539.40-3,504.35-1,420.34

Finding the Fourth Proportional to 2,539.40, 3,504.35 and 1,420.34

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Solution

The fourth proportional to 2,539.40, 3,504.35 and 1,420.34 is: 1,960.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.40 : 3,504.35 = 1,420.34 : x
  2. Step 2: Convert to fraction form
    2,539.40/3,504.35 = 1,420.34/x
  3. Step 3: Cross multiply
    2,539.40x = 3,504.35 × 1,420.34
  4. Step 4: Simplify right side
    2,539.40x = 4,977,368.48
  5. Step 5: Solve for x
    x = 4,977,368.48/2,539.40
  6. Step 6: Final answer
    x = 1,960.06

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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.