Home / 2,015.60-2,781.48-1,229.84

Finding the Fourth Proportional to 2,015.60, 2,781.48 and 1,229.84

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Solution

The fourth proportional to 2,015.60, 2,781.48 and 1,229.84 is: 1,697.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.60 : 2,781.48 = 1,229.84 : x
  2. Step 2: Convert to fraction form
    2,015.60/2,781.48 = 1,229.84/x
  3. Step 3: Cross multiply
    2,015.60x = 2,781.48 × 1,229.84
  4. Step 4: Simplify right side
    2,015.60x = 3,420,775.36
  5. Step 5: Solve for x
    x = 3,420,775.36/2,015.60
  6. Step 6: Final answer
    x = 1,697.15

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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.