Home / 3,015.49-4,519.59-1,280.47

Finding the Fourth Proportional to 3,015.49, 4,519.59 and 1,280.47

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Solution

The fourth proportional to 3,015.49, 4,519.59 and 1,280.47 is: 1,919.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.49 : 4,519.59 = 1,280.47 : x
  2. Step 2: Convert to fraction form
    3,015.49/4,519.59 = 1,280.47/x
  3. Step 3: Cross multiply
    3,015.49x = 4,519.59 × 1,280.47
  4. Step 4: Simplify right side
    3,015.49x = 5,787,199.41
  5. Step 5: Solve for x
    x = 5,787,199.41/3,015.49
  6. Step 6: Final answer
    x = 1,919.16

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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.