Home / 2,559.20-3,531.58-1,440.20

Finding the Fourth Proportional to 2,559.20, 3,531.58 and 1,440.20

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Solution

The fourth proportional to 2,559.20, 3,531.58 and 1,440.20 is: 1,987.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,559.20 : 3,531.58 = 1,440.20 : x
  2. Step 2: Convert to fraction form
    2,559.20/3,531.58 = 1,440.20/x
  3. Step 3: Cross multiply
    2,559.20x = 3,531.58 × 1,440.20
  4. Step 4: Simplify right side
    2,559.20x = 5,086,181.52
  5. Step 5: Solve for x
    x = 5,086,181.52/2,559.20
  6. Step 6: Final answer
    x = 1,987.41

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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.