Home / 2,987.63-4,479.63-1,232.09

Finding the Fourth Proportional to 2,987.63, 4,479.63 and 1,232.09

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Solution

The fourth proportional to 2,987.63, 4,479.63 and 1,232.09 is: 1,847.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.63 : 4,479.63 = 1,232.09 : x
  2. Step 2: Convert to fraction form
    2,987.63/4,479.63 = 1,232.09/x
  3. Step 3: Cross multiply
    2,987.63x = 4,479.63 × 1,232.09
  4. Step 4: Simplify right side
    2,987.63x = 5,519,313.91
  5. Step 5: Solve for x
    x = 5,519,313.91/2,987.63
  6. Step 6: Final answer
    x = 1,847.39

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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.