Home / 2,987.26-4,479.78-1,254.94

Finding the Fourth Proportional to 2,987.26, 4,479.78 and 1,254.94

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Solution

The fourth proportional to 2,987.26, 4,479.78 and 1,254.94 is: 1,881.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.26 : 4,479.78 = 1,254.94 : x
  2. Step 2: Convert to fraction form
    2,987.26/4,479.78 = 1,254.94/x
  3. Step 3: Cross multiply
    2,987.26x = 4,479.78 × 1,254.94
  4. Step 4: Simplify right side
    2,987.26x = 5,621,855.11
  5. Step 5: Solve for x
    x = 5,621,855.11/2,987.26
  6. Step 6: Final answer
    x = 1,881.94

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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.