Home / 1,520.66-2,280.99-788.70

Finding the Fourth Proportional to 1,520.66, 2,280.99 and 788.70

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Solution

The fourth proportional to 1,520.66, 2,280.99 and 788.70 is: 1,183.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.66 : 2,280.99 = 788.70 : x
  2. Step 2: Convert to fraction form
    1,520.66/2,280.99 = 788.70/x
  3. Step 3: Cross multiply
    1,520.66x = 2,280.99 × 788.70
  4. Step 4: Simplify right side
    1,520.66x = 1,799,028.32
  5. Step 5: Solve for x
    x = 1,799,028.32/1,520.66
  6. Step 6: Final answer
    x = 1,183.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.